CN111821002A - A puncture device and its converter - Google Patents

Abstract

The present invention is a converter for a puncture device, comprising a bracket and a sealing cover arranged on the bracket, the sealing cover is provided with a through hole, and the sealing cover is fitted with the end face of the puncture device through a pressing mechanism seal. The structure of the invention is simple, the sealing cover is made of soft material with good toughness, and the structure is thick in the middle and thin on both sides, and has good sealing performance. The stent of the present invention adopts an elliptical structure, which is easy to disassemble and has good strength; meanwhile, when doctors use surgical instruments of different diameters, they do not need to replace the trocars of different diameters, which greatly shortens the operation time of clinicians. The safety of the operation is greatly improved.

Description

A puncture device and its converter

technical field

The invention relates to the field of medical equipment, in particular to a converter of a puncture device and a puncture device thereof.

Background technique

In the minimally invasive surgery of the abdominal cavity and pelvis, the surgical channel needs to be established first. A trocar is a medical device that pierces the abdominal wall of the human body to provide an instrument channel for minimally invasive surgery in the abdominal cavity and pelvis.

In the prior art, the trocars suitable for large-diameter surgical instruments cannot be used for small-diameter surgical instruments. Therefore, in the operation that requires the use of large-diameter instruments and small-diameter instruments, two types of trocars need to be used. Two wounds need to be created on the human body.

SUMMARY OF THE INVENTION

In order to solve the problem that the current large-diameter trocar cannot be used for small-diameter surgical instruments, the present invention adopts a trocar converter, which includes a bracket and a sealing cover arranged on the bracket, the sealing cover A through hole is opened on the upper part, and the sealing cover is fitted and sealed with the end face of the puncture device through a pressing mechanism.

Preferably, both sides of the bracket are provided with buckles for fixing the bracket on the trocar. The bracket is fixed on the trocar through a snap on the trocar.

Further, the bracket has an oval shape. The bracket has good elasticity, and the user's two fingers pinch the two sides of the bracket, so that the bracket is easily deformed, and it is convenient to disassemble and install the bracket.

Preferably, the pressing mechanism includes a bridge plate and a cap, the bridge plate is provided with a pressing ring for pressing the sealing cover, the pressing ring is provided with a fixing hole, and one end of the sealing cover passes through The fixing hole is fixedly connected with the cover cap, and the bridge plate is fixed on the bracket through a clamping structure. The bridge plate can be opened and closed, when the bridge plate is open, a large diameter instrument can be used, and the large diameter instrument can be inserted directly from the puncture hole on the trocar for surgical work; when the bridge plate is closed, a smaller diameter can be used The trocar, the trocar with a smaller diameter can be inserted from the through hole of the sealing cover to perform surgical work, which meets the needs of different sizes. The sealing cover and the cap can be fixedly connected by welding or gluing.

Preferably, one end of the bracket is provided with a hinge seat, and one end of the bridge plate is hinged on the hinge seat through a latch. The bridge plate is hinged on the hinge seat through a latch, so that the bridge plate can be opened and closed at a large angle.

Further, the clamping mechanism includes a buckle body fixed on the bracket and a card body fixed on the bridge plate, and the card body cooperates with the buckle body for fixing the bridge plate on the bridge plate. on the bracket. The bridge plate can be locked on the bracket through the clamping structures on both sides, so that the medical device can be inserted into the through hole more stably, which is convenient for subsequent operation. The bridge plate can be hinged on the bracket on one side, and the other side can be fixed on the bracket through the clamping structure, so that the bridge plate can be turned over to realize the opening and closing of the bridge plate.

Preferably, the pressing mechanism includes a bridge plate and a cap, the bridge plate is fixed on the bracket, a fixing hole is formed on the bridge plate, and one end of the sealing cover passes through the fixing hole and the Cap fixed connection. The bridge plate and the bracket are integrally formed, and the bridge plate cannot be opened and closed. When a larger diameter medical device needs to be inserted, the converter can be omitted, and the larger diameter device can be directly inserted through the puncture hole in the trocar to perform surgery; When a smaller diameter medical instrument needs to be inserted, the converter can be installed on the trocar, the smaller diameter instrument can be inserted from the through hole of the sealing cover, and finally entered into the puncture hole of the trocar to perform surgical work. requirements of different sizes. Since the bridge plate is fixed on the bracket, when the bracket is fixed on the puncture device, the sealing cover has been compressed and fitted with the end face of the puncture device, which has a good sealing effect. The sealing cover and the cap can be fixedly connected by welding or gluing.

Preferably, the sealing cover includes a connecting portion and a sealing portion, the sealing portion is in the shape of a trumpet, the connecting portion is located at one end away from the trocar, the cross-section of the connecting portion is I-shaped, and the connecting portion is in an I-shape. It comprises a main body part and limiting parts arranged at both ends of the main body part, the size of the main body part corresponds to the size of the fixing hole, and the size of the limiting part is larger than the size of the fixing hole. The trumpet-shaped sealing part plays a very good role in sealing, and the I-shaped connecting part makes the sealing cover fixed on the bridge plate more stably and firmly. The sealing cover is made of soft material with good toughness, which has a good sealing effect.

Further, in order to improve the sealing performance of the trocar, the middle thick edge of the sealing portion is thin.

Preferably, the size of the sealing portion is larger than the size of the puncture hole of the puncture device, and the axis of the sealing cover is collinear with the axis of the puncture hole. The size of the sealing portion is larger than the size of the puncture hole, and the sealing portion covers the puncture hole and plays a good sealing effect. The axis of the sealing cover is collinear with the axis of the puncture hole, so that when the instrument is inserted into the puncture hole, there is a larger working space.

The present application also provides a puncture device on which the converter is installed.

Further, the end surface of the puncture device is an inclined surface arranged obliquely. The inclined plane plays a good guiding role, and the inclined plane is inclined toward the direction of inserting the instrument. When the instrument is inserted into the trocar, it plays a guiding role, preventing the corresponding puncture hole from being found when the instrument is inserted.

Preferably, the end face of the trocar is provided with an insertion hole connected with the bracket. The insertion holes cooperate with the snaps on both sides of the bracket to fix the bracket on the trocar.

Beneficial effects: the structure of the invention is simple, the sealing cover is made of soft material with good toughness, and the structure is thick in the middle and thin on both sides, and has good sealing performance. The stent of the present invention adopts an elliptical structure, which is easy to disassemble and has good strength; meanwhile, when doctors use surgical instruments of different diameters, they do not need to replace trocars of different diameters, which greatly shortens the operation time of clinicians. The safety of the operation is greatly improved.

Description of drawings

1 is an exploded view of the overall structure of the converter of the present invention;

2 is a schematic diagram of the installation of the converter of the present invention;

Fig. 3 is a schematic diagram of the structure of the puncture needle of the present invention;

Figure 4 is a schematic structural diagram of the trocar of the present invention;

5 is a schematic structural diagram of a sealing cover of the present invention;

6 is a sectional view of the converter installation structure of the present invention;

7 is a schematic structural diagram of a converter in Embodiment 2 of the present invention;

1, bracket; 2, sealing cover; 2-1, sealing part; 2-2, connecting part; 2-2-1, limit part; 2-2-2, main body part; 3, bridge plate; 4, cap ;5, through hole; 6, latch; 7, hinged seat; 8, card body; 9, buckle body; 10, buckle; 11, puncture device; 12, puncture needle; 13, insertion hole; 14, puncture hole ; 15, pressure ring; 16, fixed hole; 17, bevel.

Detailed ways

Example 1

A puncture converter, as shown in Figures 1-6, includes a bracket 1 and a sealing cover 2 arranged on the bracket 1, the sealing cover 2 is provided with a through hole 5, and the sealing cover 2 passes through The pressing mechanism is fitted and sealed with the end face of the trocar 11. The end face of the trocar 11 is an inclined surface 17, which plays a good guiding role. The inclined surface 17 is inclined towards the direction of inserting the instrument. When it reaches the puncture device 11, it plays a guiding role to prevent the corresponding puncture hole 14 from being found when the instrument is inserted.

Both sides of the bracket 1 are provided with buckles 10 for fixing the bracket 1 on the puncture device 11 , and the end surface of the puncture device 11 is provided with an insertion hole 13 connected to the bracket 1 . The bracket 1 is installed in the insertion hole 13 through the clip 10 , so that the bracket 1 and the puncture device 11 are fixed together. The bracket 1 is oval, and the bracket 1 has good elasticity. The user squeezes the buckles 10 on both sides of the bracket 1 by hand, and the bracket 1 is easily deformed, which is convenient for installation and disassembly of the bracket.

The pressing mechanism includes a bridge plate 3 and a cap 4. The bridge plate 3 is provided with a pressing ring 15 for pressing the sealing cover 2. In order to improve the effect of pressing the sealing cover 2, the pressing ring 15 protrudes from the bridge plate. 3 is set so that the contact surface between the pressure ring 15 and the sealing cover 2 is larger, the pressure ring 15 is provided with a fixing hole 16, and the end of the sealing cover 2 away from the puncture 11 passes through the fixing hole 16 and The cap 4 is fixedly connected, one end of the bracket 1 is provided with a hinge seat 7 , one end of the bridge plate 3 is hinged on the hinge seat 7 through a latch 6 , and the other end of the bracket 1 is provided with a buckle body 9 , the other end of the bridge plate 3 is provided with a card body 8 , and the card body 8 cooperates with the buckle body 9 to fix the bridge plate 3 on the bracket 1 . The bridge plate 3 can be opened and closed. When the bridge plate 3 needs to be opened, press the card body 8 and turn the bridge plate 3 to open the bridge plate 3. The large-diameter instrument can be directly passed through the puncture hole in the puncture device 11. 14 is inserted, and the operation is performed; when the bridge plate 3 needs to be closed, the bridge plate 3 is rotated, and the card body 8 on the bridge plate 3 is stuck in the buckle body 9. At this time, the pressure ring 15 presses the sealing cover 2, and the sealing cover 2 The puncture hole 14 of the puncture device 11 is pressed, which has good sealing performance, and the puncture device 11 with a smaller diameter can be inserted into the through hole 5 of the sealing cover 2 to perform surgical work, which meets the needs of different sizes.

The sealing cover 2 includes a connecting portion 2-2 and a sealing portion 2-1. The sealing portion 2-1 is trumpet-shaped. The connecting portion 2-2 is located at one end away from the puncture device 11. The cross section of 2-2 is I-shaped, and the connecting part 2-2 includes a main body part 2-2-2 and limit parts 2-2-1 arranged at both ends of the main body part 2-2-2. The size of the main body portion 2-2-2 corresponds to the size of the fixing hole 16, the size of the limiting portion 2-2-1 is larger than the size of the fixing hole 16, and the sealing portion 2-1 is thick in the middle Thin edges. The trumpet-shaped sealing part 2-1 plays a very good sealing role, and the I-shaped connecting part 2-2 makes the sealing cover 2 fixed on the bridge plate 3 more stably and firmly, and the sealing cover 2 adopts a soft material with good toughness , has played a very good sealing effect.

Working principle: first use the puncture needle 12 on the puncture device 11 to pierce the abdominal wall of the human body, then take out the puncture needle 12, and insert the buckle 10 on the converter into the insertion hole 13 on the puncture device 11, so as to connect the converter. It is fixedly installed on the trocar 11 . When a large-diameter instrument needs to be inserted, the bridge plate 3 is opened, the card body 8 is pressed, and the bridge plate 3 is rotated, thereby opening the bridge plate 3, and the large-diameter instrument can be inserted directly from the puncture hole 14 in the puncture device 11, Carry out surgical work; when it is necessary to insert instruments with a smaller diameter, the bridge plate 3 is closed, the bridge plate 3 is rotated, the card body 8 on the bridge plate 3 is stuck in the buckle body 9, and the pressure ring 15 presses the sealing cover 2. , the sealing cover 2 presses the puncture hole 14 of the puncture device 11, which has a good sealing performance. The puncture hole 14 is used for surgical work and meets the needs of different sizes.

Embodiment 2

The difference from the first embodiment is: as shown in FIG. 7 , the pressing mechanism includes a bridge plate 3 and a cap 4 , the bridge plate 3 is fixed on the bracket 1 , and a fixing hole is opened on the bridge plate 3 16. One end of the sealing cover 2 away from the opening thereof is fixedly connected to the cap 4 through the fixing hole 16 . The bridge plate 3 is integrally formed with the bracket 1, and the bridge plate 3 cannot be opened and closed.

Working principle: first use the puncture needle 12 on the puncture device 11 to puncture the abdominal wall of the human body, and then take out the puncture needle 12. When a larger diameter medical instrument needs to be inserted, the larger diameter medical instrument can be directly inserted through the puncture hole 14 in the trocar 11 to perform surgical work. When a smaller diameter instrument needs to be inserted, insert the buckle 10 on the converter into the insertion hole 13 on the trocar 11, so as to fix the converter on the trocar 11, because the bridge plate 3 is fixed on the puncture device 11. Therefore, when the bracket 1 is fixed on the puncture device 11, the sealing cover 2 has been compressed and is in contact with the end face of the puncture device 11 (that is, it is in contact with the inclined surface 17), which has a good sealing effect. Then a smaller diameter instrument can be inserted from the through hole 5 of the sealing cover 2 and then into the puncture hole 14 in the puncture device 11 to perform surgical work, which meets the needs of different sizes.

Embodiment 3

The difference from the above-mentioned first embodiment is that: the two sides of the bracket 1 are provided with buckle bodies 9, the bridge plate 3 is provided with a card body corresponding to the buckle body 9, and the card body 8 is connected to the buckle body. 9 is used for fixing the bridge plate 3 on the bracket 1 so that the bridge plate 3 cannot be turned over.

Working principle: first use the puncture needle 12 on the puncture device 11 to pierce the abdominal wall of the human body, then take out the puncture needle 12, and then insert the buckle 10 on the converter into the insertion hole 13 on the puncture device 11, so as to convert the The device is fixedly installed on the puncture device 11. Since the bridge plate 3 is fixed on the bracket 1 through the clamping structure, when the bracket 1 is fixed on the puncture device 11, the sealing cover 2 has been pressed by the bridge plate 3, and the puncture The end surface of the device 11 is attached (ie, attached to the inclined surface 17 ), and has good air tightness. When a larger diameter medical instrument needs to be inserted, pinch the card bodies 8 on both sides of the bridge plate 3 so that the card body 8 is separated from the buckle body 9 , thereby opening the bridge plate 3 and inserting the larger diameter medical instrument through the puncture hole 14 , perform surgery. When it is necessary to insert a smaller diameter instrument, cover the bridge plate 3 so that the card bodies 8 on both sides of the bridge plate 3 are stuck in the buckle body 9, and then insert the smaller diameter instrument from the through hole 5 of the sealing cover 2 , and then enter the puncture hole 14 in the puncture device 11 to perform surgical work, which meets the needs of different sizes.

Claims (13)

1. A converter of puncture outfit is characterized in that: the puncture outfit comprises a support (1) and a sealing cover (2) arranged on the support (1), wherein a through hole (5) is formed in the sealing cover (2), and the sealing cover (2) is attached to and sealed with the end face of a puncture outfit (11) through a pressing mechanism.

2. The switch of a puncture instrument according to claim 1, wherein: both sides of the bracket (1) are provided with buckles (10) used for fixing the bracket (1) on the puncture outfit (11).

3. The switch of the puncture instrument according to claim 2, wherein: the bracket (1) is oval.

4. The switch of a puncture instrument according to claim 1, wherein: hold-down mechanism includes bridge plate (3) and block (4), be equipped with on bridge plate (3) and be used for compressing tightly clamping ring (15) of sealed cowling (2), fixed orifices (16) have been seted up on clamping ring (15), the one end of sealed cowling (2) is passed fixed orifices (16) with block (4) fixed connection, bridge plate (3) are fixed through the joint structure on support (1).

5. The switch of the puncture instrument according to claim 3, wherein: articulated seat (7) have still been seted up to the one end of support (1), the one end of bridge plate (3) is passed through bolt (6) and is articulated on articulated seat (7).

6. The switch of the puncture instrument according to claim 3 or 4, wherein: clamping mechanism is including fixing knot body (9) on support (1) with fix card body (8) on bridge plate (3), card body (8) with detain the cooperation of body (9) and be used for with bridge plate (3) are fixed on support (1).

7. The switch of a puncture instrument according to claim 1, wherein: the pressing mechanism comprises a bridge plate (3) and a cover cap (4), the bridge plate (3) is fixed on the support (1), a fixing hole (16) is formed in the bridge plate (3), and one end of the sealing cover (2) penetrates through the fixing hole (16) and the cover cap (4) to be fixedly connected.

8. The switch of the puncture instrument according to claim 3 or 6, wherein: sealing boot (2) include connecting portion (2-2) and sealing portion (2-1), sealing portion (2-1) is the loudspeaker form, connecting portion (2-2) are located and keep away from the one end of puncture ware (11), the cross-section of connecting portion (2-2) is the I shape, connecting portion (2-2) include main part (2-2-2) and set up and be in spacing portion (2-2-1) at main part (2-2-2) both ends, the size of main part (2-2-2) with the size of fixed orifices (16) is corresponding, the size of spacing portion (2-2-1) is greater than the size of fixed orifices (16).

9. The switch of the puncture instrument according to claim 7, wherein: the middle of the sealing part (2-1) is thick and the edge is thin.

10. The switch of the puncture instrument according to claim 7, wherein: the size of the sealing part (2-1) is larger than that of a puncture hole (14) of the puncture outfit (11), and the axis of the sealing cover (2) is collinear with that of the puncture hole (14).

11. A puncture instrument using the transducer according to any one of claims 1 to 10, characterized in that: the converter is arranged on the puncture outfit (11).

12. A puncture instrument according to claim 11, characterized in that: the end surface of the puncture outfit (11) is an inclined plane (17) which is obliquely arranged.

13. A puncture instrument according to claim 11, characterized in that: the end surface of the puncture outfit (11) is provided with a plug hole (13) connected with the bracket (1).

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