CN201171692Y - Straight binding instrument cutting device - Google Patents

Abstract

The utility model relates to a linear binding instrument cutting device, which belongs to the field of medical instruments. Including the binding instrument bracket, cutting knife, staple cartridge, push rod, and staple ejector. There are staple cartridge holes on the staple cartridge. Several staple cartridge holes are arranged in a certain order to form a staple cartridge hole line. The staple pusher and cutter are loaded together. In the staple cartridge, the staple cartridge is set in the binding instrument bracket, wherein: the cutting knife is provided with a main guiding mechanism, and the staple cartridge or/and the push rod is also provided with a guiding mechanism, and the leading guiding mechanism and the guiding mechanism are mutually connected. Cooperate to realize the horizontal movement of the cutting knife while moving longitudinally. This ensures that the length of the lateral cutting of the cutting knife is greater than the effective contact length between the organ tissue and the staple cartridge, which can completely cut off the excess tissue on the side of the organ during the operation, without the need for the doctor to use tools to cut again, which not only shortens the operation time, but also The operation risk is reduced, and the space for technological progress in this field is expanded.

Description

Straight binding instrument cutting device

technical field

The utility model relates to a cutting device, in particular to a linear binding instrument cutting device, which belongs to the field of medical equipment.

Background technique

The linear surgical binding instrument commonly used in the medical field is mainly used to close the opening of the cavity tissue. The closure is neat and very firm, and the closure is not easy to leak. The original linear closer only had the function of closing. After the tissue is closed, the doctor needs to manually cut off the excess tissue. It is not suitable for the doctor to grasp the distance between the cutting line and the suture line, which may easily lead to irregular cutting lines. The straight-line surgical binding instruments that appeared later added a cutting reference line on the side of the instrument, so that doctors can cut along the reference line. Although the neatness of cutting can be improved, doctors still need to cut manually after closing.

At present, on some binding instruments used for operations on special parts, there have been instruments with a cutting knife directly, but the cutting knife of this instrument can only do a single longitudinal movement under the action of the thrust, and the tissue is cut by the instantaneous vertical thrust. Cutting, and the length of the knife is less than or equal to the effective contact length between the tissue and the staple cartridge, so some tissues on the side of the organ may not be cut, and sometimes the doctor still needs to use tools to cut again, which increases the risk and increases the operation time .

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems existing in the prior art, and to provide a linear binding instrument cutting device.

The purpose of this utility model is achieved through the following technical solutions:

Linear binding instrument cutting device, including binding instrument support, cutting knife, staple cartridge, push rod, staple ejector sheet, staple cartridge holes are set on the staple cartridge, several staple cartridge holes are arranged in a certain order to form a staple cartridge hole line, and staple ejector sheet It is loaded into the staple cartridge together with the cutting knife, and the staple cartridge is set in the binding instrument bracket, wherein: the cutting knife is provided with a main guiding mechanism, and a guiding mechanism is also provided on the staple cartridge or/and the push rod, and the main guiding mechanism and Counseling between agencies.

In the linear binding instrument cutting device above, wherein: the main guiding mechanism is a guide post, and the auxiliary guiding mechanism is a track groove; or the main guiding mechanism is a track groove, and the auxiliary guiding mechanism is a guide post.

Further, in the above linear binding instrument cutting device, wherein: the track groove is a curved groove.

Further, the above linear binding instrument cutting device, wherein: the proximal end of the nail pushing piece is provided with a slot, the cutting knife is provided with a boss, and the boss passes through the slot to realize the cutting knife and the nail pushing piece. combined.

Furthermore, in the cutting device for linear binding instruments mentioned above, wherein: the cutting knife is located on one side of the nail pushing pieces; or the cutting knife is located between the nail pushing pieces.

Furthermore, in the above linear binding instrument cutting device, wherein: the overflow prevention needle is fixed on the staple cartridge; or there is a sliding connection between the staple cartridge and the overflow prevention needle.

Furthermore, in the above linear binding instrument cutting device, there are at least two overflow prevention needles, and the distance between the overflow prevention needles is less than the length of the staple bin hole line, and is also less than the cutting length of the cutting knife.

Still further, the cutting device of the above-mentioned linear binding instrument, wherein: the nail pushing piece is provided with an opening, and the cutting knife is installed on the nail pushing piece through the opening.

The outstanding substantive features and significant progress of the technical solution of the utility model are mainly reflected in: after adopting the utility model, the cutting knife can be guided by the track groove to perform forward feeding motion and lateral cutting motion at the same time, resulting in The horizontal cutting length of the cutting knife is greater than the effective contact length between the organ tissue and the staple cartridge, so the excess tissue on the side of the organ can be completely cut off during the operation, and the doctor does not need to use tools to cut again, which not only shortens the operation time, but also reduces the cost. Surgical Risks. It can be seen that the utility model has an excellent application prospect and expands space for technical progress in this field.

Description of drawings

The objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the application of the technical solutions of the utility model, and any technical solutions formed by equivalent replacement or equivalent transformation all fall within the protection scope of the utility model. Among these drawings,

Figure 1 and Figure 2 are schematic diagrams of the distribution positions of the push pin and the cutting knife;

Fig. 3 and Fig. 4 are schematic diagrams of the positions of the cutter and the nail pusher in the standby state;

Fig. 5 is a schematic cross-sectional view of the cutting knife in a standby state;

Fig. 6 is the structural representation of cutter;

Fig. 7 and Fig. 8 are schematic diagrams of the positions of the cutting knife and the push nail in the fired state;

Fig. 9, Fig. 10 are the assembly schematic diagrams of cutting knife in embodiment one;

Fig. 11, Fig. 12 are the assembly schematic diagrams of cutting knife in embodiment two;

Figure 13 is a schematic diagram of the connection between the proximal end of the pusher piece and the pusher rod;

Fig. 14, 15 are partial use schematic diagrams of the utility model.

The meaning of each reference mark in the figure is as follows:

serial number Refers to serial number Refers to 1 cutting knife 2 Nail bin 3 push rod 4 push pin 5 guide post 6 track groove 7 Boss 8 Mating parts 9a, 9b Embedded jack 10 Anti-spill needle 11 hook up

Detailed ways

The linear binding instrument cutting device shown in Figures 1 to 13 includes a binding instrument bracket, a cutting knife 1, a staple cartridge 2, a push rod 3, and a staple push piece 4. The staple cartridge 2 is provided with a staple cartridge hole, and several staple cartridges The holes are arranged in a certain order to form the hole line of the staple cartridge. The staple pusher 4 and the cutting knife 1 are put into the staple cartridge 2 together. The staple cartridge 2 is arranged in the bracket of the binding instrument. Guidance mechanism is also provided on the staple bin 2 or/and push rod 3, and the main guidance mechanism and the guidance mechanism cooperate with each other to realize that the cutting knife 1 cuts vertically and cuts horizontally at the same time. Further, the main guiding mechanism is a guide post 5, and the auxiliary guiding mechanism is a track groove 6; or the main guiding mechanism is a track groove 6, the auxiliary guiding mechanism is a guide post 5, and the guiding post 5 is embedded in the track groove 6 That is, the guide post 5 on the cutting knife 1 is embedded in the rail groove 6 on the nail bin wall or/and the push rod 3. From the perspective of a preferred embodiment of the present invention, the rail groove 6 is a curved groove, It is more conducive to the movement and cutting of the cutting knife 1.

Further, from the convenience of assembling and the matching structure of the utility model, a slot is provided on the push nail piece 4, as shown in Figure 6: a boss 7 is installed on the cutting knife 1, and the boss 7 is installed through the slot To the cutting knife, realize the combination of cutting knife 1 and push nail piece 4. Of course, it is also possible to cast the cutting knife 1 and the boss 7 integrally, and an opening is provided on the nail pushing piece 4, and the cutting knife 1 is loaded into the nail pushing piece 4 from the opening, so that the boss 7 is matched to the nail pushing piece. In the slot of 4, the combination of cutting knife 1 and push nail piece 4 is realized. In order to further limit the cutting knife 1, a fitting 8 can be sleeved on the opening.

In order to meet different surgical needs, as shown in FIG. 1 : the cutting knife 1 is located on one side of the pusher pieces 4 ; or as shown in FIG. 2 , the cutting knife 1 is located between the pusher pieces 4 . At the same time, from the effective anti-overflow of human tissue during the operation, the anti-overflow needle 10 is fixed on the staple bin 2; Simultaneously, there are at least two anti-overflow needles 10, the distance between the anti-overflow needles 10 is less than the length of the nail bin hole line, and also less than the cutting length of the cutting knife 1, and the distance between the two anti-overflow needles is the tissue and the staple bin. effective contact length.

[Example 1]

As shown in Figure 9 and Figure 10: the guide post 5, the bump and the cutting knife 1 are manufactured separately, and at the same time, the cutting knife 1 and the staple cartridge 2 are provided with corresponding insertion holes 9a, 9b. The column 5 and the protrusion are inserted into the proximal end of the cutting knife 1 through the insertion holes 9a, 9b. Subsequently, the cutting knife 1 is put into the middle of the nail pushing piece 4, so that the proximal end of the cutting knife 1 is in contact with the proximal end of the nail pushing piece 4. Next, connect the guide post 5 and the bump through the slot at the proximal end of the pusher piece 4 to the insertion holes 9a, 9b on the cutting knife 1, and then put the pusher piece 4 and the cutting knife 1 into the staple cartridge 2 Then install the staple cartridge 2 into the binding instrument bracket, so that the guide post 5 on the cutting knife 1 is embedded in the track groove 6 on the wall of the staple cartridge 2 and the push rod 3, and the overflow-proof needle is fixed on the staple cartridge 2 10. The final shape is shown in Figure 3 and Figure 4. The proximal end of the pusher piece 4 is connected to the pusher rod 3, and the connection method can be a bayonet connection, so that after the firing is completed, both the pusher piece 4 and the cutting knife 1 can return to the staple bin 2.

The use process of the linear binding instrument cutting device is roughly as follows: when the proximal end of the nail pushing piece 4 is pushed by the nail pushing rod, it drives the cutting knife 1 to move forward together, as shown in Figure 7 and Figure 8, the nail is pushed out After the staple cartridge 2, the nails gradually enter the tissue and are formed. After the firing is completed, the nail pusher 4 and the cutting knife 1 all return to the staple cartridge 2 under the action of the recovery device of the pusher rod 3. In this process, it can be seen from FIG. 3 , FIG. 4 , FIG. 7 , and FIG. 8 that the cutting knife 1 is guided by the track groove 6 and simultaneously performs forward feeding motion and lateral cutting motion. Referring to FIG. 7 , the cutting knife 1 involved in the present invention has a transverse cutting length greater than the effective contact length between the organ tissue and the staple cartridge 2 , and can completely cut off excess tissue.

〖Embodiment 2〗

Linear binding instrument cutting device, including binding instrument support, cutting knife 1, staple magazine 2, push rod 3, staple pushing piece 4, staple magazine 2 is provided with a staple magazine hole, and nail pushing piece 4 is loaded together with cutting knife 1 In the staple cartridge 2, the staple cartridge 2 is set in the binding instrument bracket, and its special feature is that: the cutting knife 1 is provided with a main guide mechanism, and the staple cartridge 2 and the push rod 3 are also provided with a guidance guide mechanism, and the main guide mechanism Cooperate with the guiding mechanism to realize that the cutting knife 1 moves horizontally while moving longitudinally. And described main guide mechanism is guide post 5, and guidance guide mechanism is curved slotting, and guide post 5 is embedded in track groove 6, and promptly guide post 5 on cutting knife 1 is embedded in the track groove on nail bin wall and push bar 3 6, the final shape is shown in Figure 3 and Figure 4.

Wherein, as shown in Figure 2: the cutting knife 1 that constitutes the cutting device of the linear binding instrument is located in the middle of the nail pushing piece 4, and in combination with Figure 11 and Figure 12: the cutting knife 1 is integrally cast with the convex post 7, and the Described nail pushing piece 4 is provided with opening, and cutting knife 1 is loaded into pushing nail piece 4 from opening, and protruding post 7 is matched in the groove of pushing nail piece 4 proximal ends, realizes cutting knife 1 and pushing nail The combination of slices 4. In order to further limit the cutting knife 1, a fitting 8 can be sleeved on the opening. Then put the nail pushing piece 4 and the cutting knife 1 into the nail bin 2, then put the nail bin 2 on the support of the binding instrument, so that the guide post 5 on the cutting knife 1 is embedded in the nail bin 2 wall and/or the push rod 3 in the track groove 6. As shown in Figure 13: the proximal end of the pusher piece 4 is connected to the pusher rod, and the connection method is that the hook 11 on the pusher rod cooperates with the slot at the proximal end of the pusher piece 4 or with the bottom of the proximal end of the pusher piece 4. The hooks are matched, and the final shape is shown in Figure 3 and Figure 4.

The operation mode of the cutting device of the linear binding instrument is similar to that of the first embodiment, and will not be repeated here.

〖Embodiment 3〗

Linear binding instrument cutting device, including binding instrument support, cutting knife 1, staple magazine 2, push rod 3, staple pushing piece 4, staple magazine 2 is provided with a staple magazine hole, and nail pushing piece 4 is loaded together with cutting knife 1 In the staple cartridge 2, the staple cartridge 2 is set in the binding instrument bracket, and its special feature is that: the cutting knife 1 is provided with a main guide mechanism, and the staple cartridge 2 and the push rod 3 are also provided with a guidance guide mechanism, and the main guide mechanism Cooperate with the guiding mechanism to realize that the cutting knife 1 cuts vertically and cuts horizontally at the same time. And described main guide mechanism is guide post 5, and guidance guide mechanism is curved slotting, and guide post 5 is embedded in track groove 6, and promptly guide post 5 on cutting knife 1 is embedded in the track groove on nail bin wall and push bar 3 within 6.

14 and 15, the track groove 6 adopts an arc-shaped design, so when the linear binding instrument cutting device is working, the guide post 5 guides the cutting knife 1 to perform a reciprocating motion. That is, it can be clearly seen from the figure that the cutting knife 1 moves laterally along the track groove 6 , and at the same time, the cutting knife 1 moves longitudinally through the guide post 5 along with the movement guide of the track groove 6 .

It can be seen from the above description and in conjunction with the accompanying drawings that the cutting knife 1 can simultaneously perform forward feeding motion and lateral cutting motion under the guidance of the track groove 6 after adopting the utility model. And ensure that the length of the transverse cutting of the cutting knife 1 is greater than the effective contact length between the organ tissue and the staple cartridge 2, so that the excess tissue on the edge of the organ can be completely cut off during the operation, and the doctor does not need to use tools to cut again, which shortens the operation time. The risk of surgery is also reduced. This shows that the utility model has excellent application prospects and is worthy of promotion.

Claims (8)

1, linear type binding tool cutter sweep, comprise bookbinding device support, cutter, nail bin, catch bar, pushing slice of nail, the nail bin hole is set on the nail bin, some nail bins hole is arranged in certain sequence and is formed nail bin hole line, pushing slice of nail is packed into cutter in the nail bin, and nail bin is arranged in the bookbinding device support, it is characterized in that: cutter are provided with leading to mechanism,, leadingly cooperatively interact between mechanism with guidance or/and also be provided with guidance on the catch bar at nail bin to mechanism to mechanism.

2, linear type binding tool cutter sweep according to claim 1 is characterized in that: described dominating to mechanism is guide pillar, and teaching to mechanism is rail groove; Or leading be rail groove to mechanism, teaching to mechanism is guide pillar.

3, linear type binding tool cutter sweep according to claim 2 is characterized in that: described rail groove is crooked fluting.

4, linear type binding tool cutter sweep according to claim 1, it is characterized in that: described pushing slice of nail near-end is provided with fluting, and cutter are provided with projection, and projection passes fluting and realizes combining of cutter and pushing slice of nail.

5, linear type binding tool cutter sweep according to claim 1, it is characterized in that: described cutter are positioned at a side of pushing slice of nail; Or cutter are between pushing slice of nail.

6, linear type binding tool cutter sweep according to claim 1 is characterized in that: be fixed with the anti-overflow pin on the described nail bin; Or between nail bin and the anti-overflow pin for being slidingly connected.

7, linear type binding tool cutter sweep according to claim 6, it is characterized in that: described anti-overflow pin has two at least, and the distance between the anti-overflow pin is less than the length of nail bin hole line, also less than the Cutting Length of cutter.

8, linear type binding tool cutter sweep according to claim 1, it is characterized in that: described pushing slice of nail is provided with uncovered, and cutter are installed on the pushing slice of nail from uncovered.

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