CN211300134U - Stitching instrument - Google Patents

Abstract

The utility model provides a stitching instrument, which comprises a stitching instrument body and a stitching needle, wherein the needle head of the stitching needle can fall off, a thread take-up part is arranged at the lower part of the stitching instrument body, a needle releasing structure is arranged on the thread take-up part, a channel for the needle head to pass through is formed on the needle releasing structure, a needle blocking structure is arranged at the inner bottom end of the thread take-up part, and the needle head of the stitching needle enters the thread take-up part through the channel; the problem that the suture line is easily separated from a movable wing plate due to the fact that the suture line is clamped by elasticity of a silica gel sheet in the prior art is solved, and therefore the suture of a wound is influenced; when withdrawing the needle, the needle head of the stitching instrument is separated from the stitching needle under the blocking action of the needle releasing structure, is kept at the inner end of the line taking-up part and is limited at the inner end of the line taking-up part by the needle blocking structure, and the needle head is prevented from falling into the abdominal cavity to cause puncture to the abdominal cavity.

Description

a suture

technical field

The utility model belongs to the technical field of medical instruments, in particular to a stapler.

Background technique

In today's clinical surgical laparoscopic surgery, if the peritoneum and fascia layer are not sutured, it is easy to form intra-abdominal omentum or intestinal hernia or local adhesion, which may lead to incomplete intestinal obstruction, often causing puncture bleeding, puncture hernia, etc. Problems, complications occur and increase the suffering of patients.

Chinese patent CN106308861A discloses a knot pusher, including a knot pusher body and a suture probe. The flange plate of the pusher body is provided with two symmetrical guide holes, and the pusher body is rotated and locked. The outer side of the tightening device is provided with a ring sleeve, and the bottom of the ring sleeve is provided with a stopper corresponding to the guide hole; the lower part of the pusher body is provided with a movable wing plate, a fixed block is connected under the movable wing plate, and two sides of the fixed block are provided with In the accommodating groove, a through hole is arranged in the center of the fixing block, a silicone sheet is placed in the through hole and the accommodating groove, and an elastic body and a pad are arranged under the fixing block; with the knot pusher of this structure, the ring sleeve can be locked with the rotation The tightening device rotates, and the guide hole can be closed by the block at the lower end; the hard gasket set in the elastic body ensures that the blood vessels and internal organs will not be damaged during the operation, and is suitable for tissue drawing and incision in laparoscopic surgery. The skin is closed. The suture probe of this device adopts an integrated structure. The suture needle passes through the silicone sheet and enters the movable flap. Relying on the elasticity of the silicone sheet to clamp the suture, it is easy to cause the risk of the suture detaching from the movable flap, thus affecting the suture of the wound. , causing great trouble for medical staff.

Utility model content

The technical problem to be solved by the utility model is to overcome the technical problem that the suture in the prior art relies on the elasticity of the silicone sheet to clamp the suture, which easily causes the risk of the suture being detached from the movable flap.

Therefore, the purpose of this utility model is to provide a suturing device, including a suturing device body and a suturing needle, the upper part of the suturing device body is provided with a rotary locking device, and the flange plate of the suturing device body is provided with two An inclined guide hole, the front end of the guide hole is provided with a guide groove, and the lower part of the stapler body is symmetrically provided with a movable thread take-up member,

The needle of the suture needle can be dislodged;

The thread take-up member is provided with a needle removal structure, and the needle removal structure forms a channel for the needle of the suture needle to pass through;

The thread take-up member is provided with a needle blocking structure for restricting the drop of the needle head of the suture needle.

Preferably, in the suturing device, the suturing needle includes a puncture needle at the needle tail and an indwelling needle at the needle head, and the puncture needle and the indwelling needle are connected by plugging.

Preferably, in the suturing device, the indwelling needle comprises an insertion part, a needle tip part and a threading part located between the insertion part and the needle tip part, and one side of the threading part is provided with a thread for insertion and fixation of the suture. In the threading hole, the needle tip portion has a conical structure, and the outer diameter of the end connected to the threading portion is larger than the outer diameters of the threading portion and the inserting portion.

Preferably, in the suture, the needle removal structure is a plurality of sheet-like structures that can be deformed by extrusion, the thread take-up member is provided with through holes, and the plurality of sheet-like structures are formed along the through-holes. The hole edges of the holes are circumferentially spaced apart, and extend from the hole edges of the through holes toward the center of the through hole to form an extension portion, and ends of the plurality of extension portions are not connected to form the channel.

Preferably, in the suturing device, a plurality of the sheet-like structures are obliquely arranged from the outside of the through hole toward the inside of the through hole.

Preferably, in the stapler, the sheet-like structure is a barb structure.

Preferably, in the stapler, a receiving groove for accommodating the indwelling needle is opened on the needle blocking structure.

Preferably, in the stapling device, the receiving groove is in an inverted cone shape.

Preferably, in the suturing device, the suturing device body is further provided with a protective ring sleeve, and the protective ring sleeve is sleeved on the outer circumference of the rotary locking device.

The technical scheme of the utility model has the following advantages:

1. The suture provided by the utility model comprises a suture body and a suture needle. The needle of the suture needle can fall off. A channel is formed for the needle to pass through, and the inner bottom end of the thread take-up member is provided with a needle blocking structure. In the suture device of this structure, the needle of the suture needle enters the thread take-up member through the channel; The elastic clamping of the suture thread is easy to cause the risk of the suture thread falling off the movable flap, thereby affecting the suture of the wound. In addition, the structure of the separated suture needle is adopted, and no other tools are needed to withdraw the needle, which is convenient for operation; When stitching, the needle of the stapler is separated from the suture needle under the blocking action of the needle-removing structure, left on the inner end of the thread take-up member, and is restricted to the inner end of the thread take-up member by the needle blocking structure, preventing the needle from falling into the abdominal cavity and causing damage to the peritoneal cavity. A stab wound to the abdominal cavity.

2. In the suture provided by the present utility model, the needle removal structure is a plurality of sheet-like structures that can be deformed by extrusion, and is arranged on the edge of the hole of the through hole opened on the wire take-up member, and the edge of the hole faces the through hole. The center of the circle extends to form an extension part, and the ends of the extension parts of each needle removal structure are not connected to form a channel for the needle of the suture needle to pass through, and the suture needle squeezes the needle removal structure through this channel, so that the needle removal structure occurs Deformation, the channel is opened, when all the needles of the suture needle enter the thread take-up part, the needle-off structure restores the deformation and clamps the needle tail of the suture needle. When it reaches the thread take-up part, the convex edge of the needle abuts on the inner side of the needle removal structure. When the needle is withdrawn, the needle removal structure forms a block against the convex edge of the needle head, so that the needle head and the needle tail of the suture needle are separated, and the stitching is carried out. The needle of the thread is indwelled in the thread take-up member, and the needle-blocking structure forms a limit and storage for the needle, preventing the needle from falling into the abdominal cavity and causing stab wounds to the abdominal cavity, thereby improving the safety of use.

3. In the suture provided by the utility model, the needle removal structure is inclined from the outside of the through hole to the inside. The downward needle removal structure is more likely to block the needle head, which makes the separation of the needle head and the needle tail more convenient.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the structural representation of the stapler of the present invention;

Fig. 2 is the sectional structure schematic diagram of the stapler of the present invention;

Fig. 3 is the structural schematic diagram of the thread take-up part of the stapler of the present invention;

4 is a schematic diagram of the suture needle structure of the suture device of the present invention;

5 is a schematic diagram of the structure of the indwelling needle of the stapler of the present invention;

6 is a schematic diagram of the structure of the puncture needle of the stapler of the present invention;

7 is a schematic structural diagram of the cooperation of the locking member of the rotary locking device of the stapler of the present invention with the pull rod and the thread take-up member;

8 is a schematic structural diagram of the needle blocking structure of the stapler of the present invention;

Fig. 9 is the structural schematic diagram of the locking piece of the stapler of the present invention;

10 is a schematic structural diagram of the pull rod of the stapler of the present invention;

Fig. 11 is the structural representation of the protection ring of the present invention;

Figure 12 is an exploded view of the stapler of the present invention.

Description of reference numbers:

1 - suture body;

2-suture needle; 21-indwelling needle; 211-needle tip; 212-insertion part; 213-thread part; 2131-thread hole; 214-convex; 22-puncture needle; 221-insertion hole; 23-grip Bundle;

3 - take-up parts;

4- Rotary locking device; 41- Locking piece; 411- Connecting rod; 412- Locking rod; 413- Locking groove; 4131- Upper locking groove; 4132- Connecting groove; ; 415 - bar chute; 42 - handle;

5- needle removal structure; 51- extension part;

6- needle block structure; 61- storage groove;

7- pilot hole;

8 - guide groove;

9 - flange plate;

10 - channel;

11 - through hole;

12-protection ring sleeve; 121-lug; 122-avoidance hole; 123-flat key;

13-Tie rod; 131-Hinged shaft;

14 - fixed pin;

15 - hinge hole;

16 - Arc-shaped waist hole.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

The stapler of this embodiment, as shown in Figures 1 to 12, includes a stapler body 1 and a suture needle 2. The stapler body 1 is assembled from two symmetrical cylinder bodies, and the upper part of the stapler body 1 is provided with a rotary lock The tightening device 4, the lower part is provided with a relatively movable wire take-up member 3 arranged symmetrically, and the unlocking and locking are controlled by the rotation of the rotary locking device 4. , the pull rod 13 can be pulled up or pushed down, the pulling or pushing motion of the pull rod 13 will drive the two symmetrically arranged thread take-up parts 3 to open outward or close inward; the upper end of the stapler body 1 is fixed with a flange plate 9, The flange plate 9 is provided with two inclined guide holes 7 which are adapted to the suture needle 2. The front end of the guide hole 7 is provided with a guide groove 8, and the guide groove 8 is inclined downward from the guide hole 7 of the flange plate 9. and extend along the side wall of the stapler body 1 to the lower end of the stapler body 1; the needle head of the suture needle 2 can fall off, including the puncture needle 22 at the needle tail and the indwelling needle 21 at the needle head, and the puncture needle 22 is connected with the indwelling needle 21. The end is provided with a concave insertion hole 221 along the length direction of the puncture needle, and the indwelling needle 21 is inserted and connected in the insertion hole 221 of the puncture needle 22. Optionally, the puncture needle 22 and the indwelling needle 21 can also use other A detachable structural connection, such as a magnetic connection, etc., is sufficient as long as the indwelling needle 21 can be detached from the puncture needle 22 by the blocking action of the needle detachment structure 5 during the needle withdrawal process; for the convenience of operation, the end of the puncture needle 22 There is also a handle 23, and the outer end of the handle 23 is also provided with an anti-slip protrusion (not marked) to increase friction; when using this stapler to sew a wound, insert the stapler through the wound into the abdominal cavity in a locked state When the stapler is completely inserted into the abdominal cavity, it is switched to the unlocked state, so that the two thread take-ups 3 at the lower part of the stapler body 1 are spread out and close to the abdominal wall, and the rotary locking device 4 is turned to the locked state, and the suture is passed through. The suture needle 2 is fixed on the suture needle 2. As the suture needle 2 is inserted downward into the guide hole 7 and is fed diagonally downward along the guide groove 8 into the lower thread take-up member 3 on the opposite side of the guide hole 7, the suture needle 2 The needle exerts a downward pressure on the needle removal structure 5, so that the needle removal structure 5 is stretched and enters the thread take-up member 2. The needle removal structure 5 clamps the suture needle with the suture due to its elastic recovery and deformation; when the needle is withdrawn , Pull the suture needle 2 upward, the needle head of the suture needle 2 is separated from the needle tail of the suture needle 2 under the blocking action of the needle removal structure 5, and remains in the thread take-up member 3, and is blocked by the stopper set at the bottom end of the thread take-up member 3. The needle structure 6 is limited and fixed in the thread take-up member 3 to prevent the needle from falling into the abdominal cavity of the human body and causing stab wounds to the internal organs of the human body.

As shown in FIG. 5 , the indwelling needle 21 of the present invention includes an insertion portion 212 , a needle tip portion 211 and a threading portion 213 located between the insertion portion 212 and the needle tip portion 211 . Threading hole 2131, the needle tip 211 has a conical structure, the inserting part 121 and the threading part 213 are cylindrical, and the outer diameter of the needle tip 211 is larger than the outer diameter of the threading part 213 and the inserting part 212, so that the needle tip 211 and the One end of the threading portion 213 is formed with a convex edge 214 for abutting against the needle-removing structure. When the needle is withdrawn, the convex edge 214 abuts on the inner side of the needle-removing structure 5, and is blocked by the needle-removing structure 5 to contact the puncture needle 22. Separated and left in the wire take-up member 3 . The threading hole 2131 is an open slot opened on one side of the threading portion 213 ; it may also be a slotted hole penetrating from one end of the threading portion 213 to the other end.

As shown in FIG. 3 , the needle removal structure 5 of the present invention is a plurality of sheet-like structures that can be deformed by extrusion. Through holes 11 are opened on the wire take-up member 3 , and the plurality of sheet-like structures are formed along the through holes 11 The hole edges are circumferentially spaced and inclined from the outer side of the through hole 11 toward the inner side of the through hole 11 , there is a gap between adjacent sheet-like structures, and one end of each sheet-like structure is directed from the hole edge of the through hole 11 toward the through hole 11 . The center of the hole extends to form an extension portion 51 , and the ends of the extension portions 51 are not connected to each other to form a channel 10 for the needle of the suture needle 2 to pass through. Preferably, the sheet-like structure is a barbed structure, which is made of silicone material and has elasticity. When the suture needle moves along the guide groove 8 to the position of the through hole 11, under the guiding action of the inclined needle removal structure 5, it continues to descend. The movement enters the thread take-up member 3, and exerts a downward pressure on the needle removal structure 5, so that the extension 51 of the needle removal structure 5 moves from the center position of the through hole 11 toward the hole edge of the through hole 11, is stretched, and the indwelling needle 21 Enter into the thread take-up member 3 to complete the needle feeding process, pull the suture needle 2 when the needle is withdrawn, the indwelling needle 21 moves upward along with the puncture needle 22, the needle removal structure 5 abuts against the convex edge 214 of the indwelling needle 21, and applies pressure to the convex edge 214. The downward pressure causes the indwelling needle 21 and the puncture needle 22 to reversely separate, the puncture needle 22 continues to move upward and leaves the stapler body 1 , and the indwelling needle 21 with the suture is indwelled in the thread take-up member 3 , in the needle blocking structure 6 . Under the blocking and limiting action, the indwelling needle 21 will not continue to fall and fall off from the thread take-up member 3 into the abdominal cavity, puncturing the abdominal cavity and improving the safety of use; The thread member 3 has a guiding function when it is inside, so that the needle is inserted more smoothly; at the same time, it can more effectively abut on the convex edge 214 of the indwelling needle 21 during the needle withdrawal process, and exert a downward pressure on the indwelling needle 21, so that the indwelling needle 21 can be It is more smoothly separated from the puncture needle 22; the elasticity of the needle removal structure 5 is small, and the force required for its elastic deformation is greater than the force required for the indwelling needle 21 to separate from the puncture needle 22. , there is no specific limitation or description, and those skilled in the art can make selections according to the actual situation. Optionally, the needle removal structure 5 can also be extended from the hole edge of the through hole 11 toward the center of the through hole 11, but not inclined, as long as the ends of the extension parts 51 of the respective sheet-like structures are not in contact with each other, It is enough to form a channel 10 for the indwelling needle 21 to pass through, and the outer diameter of the channel 10 should be smaller than the outer diameter of the indwelling needle 21, so that when the needle is withdrawn, the convex edge 214 of the indwelling needle 21 is blocked, so that the indwelling needle 21 Separation from the puncture needle 22 occurs. The number and size of the needle-releasing structures 5 are not limited. Optionally, the needle-releasing structure 5 may be a triangular sheet-like structure or a fan-shaped sheet-like structure or the like. Optionally, the needle removal structure 5 may not be arranged on the hole edge of the through hole 11, but may be arranged on the inside or outside of the hole edge of the through hole 11; the needle removal structure 5 can be integrally formed with the wire take-up member 3. It is also possible to first open the through hole 11 on the wire take-up member 3, and then set the needle removal structure 5 that can be deformed by extrusion on the hole edge of the through hole 11 or the inner side of the hole edge or the outer side of the hole edge.

The needle blocking structure 6 of the present invention is a cylindrical circular truncated structure, and a receiving groove 61 for accommodating the indwelling needle 21 is provided on it. It should be slightly larger than the indwelling needle 21, which is not specifically limited; it can be detachably connected to the bottom end of the wire take-up member 3, which can be a snap connection, a threaded connection, or other detachable connection methods. After the wound is sutured, it is convenient to take out the indwelling needle 21 from the thread take-up member 3 .

As shown in FIGS. 3 , 7 , 10 and 12 , a fixing pin 14 is provided on the inner side of the lower end of the stapler body 1 , a hinge shaft 131 is respectively provided on both sides of the other end of the pull rod 13 , and the two thread take-ups 3 are provided with There is a hinge hole 15 matching the hinge shaft 131 on the pull rod 13, the hinge shaft 131 is hingedly connected with the hinge hole 15, and the two symmetrically arranged wire receiving members 3 can be respectively rotated along the hinge shaft 131 on both sides of one end of the pull rod 13 to realize Opening and closing of the wire take-up member 3; in the unlocked state, push the pull rod 13 downward, and the two symmetrically arranged wire take-up members 3 are opened to both sides and are in a vertical state with the pull rod 13; the wire take-up member 3 avoids The position of the hinge hole 15 is provided with an arc-shaped waist-shaped hole 16 that matches the fixing pin 14 on the inner side of the lower part of the stapler body 1. During the opening and closing process of the thread take-up member, the fixing pin 14 slides along the arc-shaped waist-shaped hole 16 .

As shown in FIG. 2 , FIG. 7 and FIG. 9 , the rotary locking device 4 includes a locking member 41 and a handle 42 , and the locking member 41 includes a connecting rod 411 and a locking rod 412 that are coaxially sleeved, and the connecting rod 411 is hollow. , and the middle outer side wall is provided with a lock slot 413, including a lower lock slot 4133, an upper lock slot 4131 and a connection slot 4132 between the upper lock slot 4131 and the lower lock slot 4133, and the upper outer side wall of the connecting rod 411 is provided with The bar-shaped chute 415 extending in the length direction has an annular slot 414 at the lower part, and the pull rod 13 is connected with the annular slot 4141 of the connecting rod 411, which increases the connection tightness of the pull 3 rod and the connecting rod 411; the locking rod 412 In the unlocked state, it can slide up and down in the inner cavity of the connecting rod 411 and its upper end extends out of the top of the connecting rod 411 and is fixedly connected with the handle 42 . Lock. For example, the outer side wall of the lower end of the locking rod 412 is provided with a protruding column structure (not shown) that cooperates with the locking groove 413, and can also be other existing rotary locking device structures, as long as it can move in the locking groove to realize unlocking and locked. When in use, the locking rod 412 is limited to the lower locking groove 4133, the handle 42 is turned to unlock, the locking rod 412 is separated from the lower locking groove 413, and the locking rod 412 can move along the connecting groove 4132 in the cavity of the connecting rod 411. When the upper limit of the locking groove 4131 is turned, the handle 42 is rotated so that the convex column structure of the locking rod 412 enters the locking groove 4131 to be limited and fixed, and then switches to the locked state, and then the suture needle 2 can be inserted and fixed. The follow-up work is done; in the unlocked state, pulling the lock lever 412 upward to the upper limit of the lock slot will drive the connecting rod 411 to pull the pull rod 13 to pull out together, and the movement of the pull rod 13 drives the wire take-up member 3 to open.

As shown in FIG. 11 , a protective ring sleeve 12 is also sleeved on the outer circumference of the rotary locking device 4 , and the protective ring sleeve 12 has a convex structure, and its lower end is symmetrically provided with lugs that protrude and extend outward along its radial direction. 121, the lug 121 is provided with an escape hole 122 that matches the guide hole 7, the inner side of the upper end of the protective ring sleeve 12 is symmetrically provided with a flat key 123 that matches the bar-shaped chute 415 on the connecting rod 411, and the flat key 123 It is slidably connected with the bar-shaped chute 415 .

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (9)

1. A stitching instrument comprises a stitching instrument body (1) and a stitching needle (2), wherein a rotary locking device (4) is arranged at the upper part of the stitching instrument body (1), two inclined guide holes (7) are arranged on a flange plate (9) of the stitching instrument body (1), a guide groove (8) is arranged at the front end of each guide hole (7), and movable thread take-up pieces (3) are symmetrically arranged at the lower part of the stitching instrument body (1),

the needle head of the suture needle (2) can drop;

the thread take-up piece (3) is provided with a needle release structure (5), and the needle release structure (5) is provided with a channel (10) for the needle head of the suture needle (2) to pass through;

a needle blocking structure (6) for limiting the needle head of the suture needle (2) to fall is arranged in the thread take-up piece (3).

2. The suturing device according to claim 1, wherein the suturing needle (2) comprises a puncture needle (22) at the tail part and an indwelling needle (21) at the head part, and the puncture needle (22) and the indwelling needle (21) are connected in a plugging manner.

3. The suturing device of claim 2, wherein the indwelling needle (21) comprises an insertion portion (212), a needle tip portion (211), and a threading portion (213) located between the insertion portion (212) and the needle tip portion (211), wherein a threading hole (2131) for inserting and fixing a suture thread is formed in one side of the threading portion (213), the needle tip portion (211) is of a conical structure, and the outer diameter of one end connected with the threading portion (213) is larger than the outer diameters of the threading portion (213) and the insertion portion (212).

4. The stitching instrument as claimed in claim 1, wherein the needle-removing structure (5) is a plurality of sheet-like structures which can be deformed by extrusion, the thread take-up member (3) is provided with a through hole (11), the plurality of sheet-like structures are arranged along the hole edge of the through hole (11) at intervals in the circumferential direction, and extend from the hole edge of the through hole (11) towards the center of the through hole (11) to form an extension portion (51), and the ends of the plurality of extension portions (51) are not connected to form the channel (10).

5. A stapler according to claim 4, characterized in that a plurality of said sheet-like structures are arranged obliquely from the outside of said through hole (11) towards the inside of said through hole (11).

6. The stapler of claim 5, wherein the sheet-like structure is a barb structure.

7. A suturing device according to claim 2, wherein the needle-blocking structure (6) defines a receiving slot (61) for receiving the indwelling needle (21).

8. The stapler according to claim 7, wherein the receiving groove (61) has an inverted cone shape.

9. A stapler according to any of claims 1-8, characterized in that said stapler body (1) is further provided with a guarding ring (12), said guarding ring (12) being fitted around the outer circumference of said rotation-locking device (4).

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