CN212973003U

CN212973003U - Anastomat

Info

Publication number: CN212973003U
Application number: CN202021868097.5U
Authority: CN
Inventors: 王朝义; 邹锋; 赵宁; 陈兆伟; 朱东东
Original assignee: Shandong Weray Surgical Medical Products Co ltd
Current assignee: Shandong Weray Surgical Medical Products Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-16
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses an anastomat, which comprises an execution part and an instrument main body for installing the execution part, wherein the instrument main body comprises a shell, a firing handle pivoted with the shell, a rack plectrum and a rack plectrum baffle, and the firing handle is connected with the rack through the rack plectrum; the rack is in an interval tooth shape, the rack is provided with a tooth A positioned at the limit firing position of the first nail bin and a tooth B positioned at the limit firing position of the second nail bin, a tooth-shaped structure is not arranged between the tooth A and the tooth B, and the length of the first nail bin is smaller than that of the second nail bin; the rack plectrum baffle is connected with the shell in a sliding manner, and the larger the length of a nail bin arranged in the execution part is, the farther the rack plectrum baffle is away from the rotating center of the firing handle; therefore, the short-stroke nail bin can be suitable for nail bins with different specifications, different firing distances can be set according to different nail bin assemblies, the problem that the short-stroke nail bin can still be fired after reaching the tail end of the stroke is solved, and the damage of instruments or the additional injury to patients is avoided.

Description

Anastomat

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to an anastomat.

Background

The anastomat is used as a substitute device for manual suturing, utilizes titanium nails to perform separation or anastomosis on tissues, is mainly used for closing stumps or incisions in endoscopic digestive tract reconstruction and organ resection operations, can also be used for separation and resection of liver parenchyma, pancreas, kidney and spleen, and is suitable for various open or minimally invasive common surgeries, obstetrics and gynecology, urology surgery, thoracic surgery and pediatric surgeries.

The existing anastomats are roughly divided into two types, one type of instrument main body 1 and the executing part 2 are integrated, as shown in fig. 1, the advancing distance cut by the anastomat during firing is fixed, namely, only a nail bin with a fixed length can be installed, so that different anastomats are needed when the tissues of a patient need to be cut with different lengths, and the medical cost of the patient is increased; another kind of apparatus body 1 and executive component 2 are separated, the apparatus body 1 can be suitable for executive components 2 of different lengths, as shown in fig. 2, because the percussion length of the apparatus body 1 needs to adapt to the longest nail bin, the end point of the stroke can not be determined when the short-stroke suture nail bin is fired, the possibility of continuous firing exists, the cutting knife is broken or the apparatus is damaged, the cutting knife can not be pulled back to reset, and the fatal injury can be caused to the patient.

In summary, how to adapt to different staple cartridge assemblies and set different firing distances according to different staple cartridge assemblies is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an anastomat, it is adjustable through setting up the non-full tooth of rack and rack plectrum dog position, realized setting up the function of different percussion distances according to different nail storehouse subassemblies.

In order to achieve the above object, the present invention provides the following technical solutions:

a stapler comprises an execution part and an instrument main body for installing the execution part, wherein the instrument main body comprises a shell, a firing handle pivoted with the shell, a rack plectrum and a rack plectrum baffle, and the firing handle is connected with the rack through the rack plectrum;

the rack is in an interval tooth shape, the rack is provided with a tooth A positioned at a first nail bin limit firing position and a tooth B positioned at a second nail bin limit firing position, a tooth-shaped structure is not arranged between the tooth A and the tooth B, and the length of the first nail bin is smaller than that of the second nail bin;

the rack plectrum baffle is connected with the shell in a sliding mode, and the larger the length of a nail bin installed in the execution part is, the farther the rack plectrum baffle is away from the rotating center of the firing handle.

Preferably, the rack is also provided with C teeth positioned at the extreme firing position of a third nail bin, and a toothless structure is arranged between the B teeth and the C teeth;

the length of the second staple cartridge is less than the length of the third staple cartridge.

Preferably, one of the shell and the rack shifting piece baffle is provided with a sliding groove, and the other is provided with a sliding block in clamping fit with the sliding groove;

one end, far away from the firing handle, of the rack shifting piece baffle is connected with the shell through an elastic piece.

Preferably, one end of the elastic piece is fixedly connected with the shell, and the other end of the elastic piece is abutted against or connected with the end face of the rack shifting piece baffle.

Preferably, the number of the sliding grooves is two, and the two sliding grooves are respectively perpendicular to two ends of the rack shifting piece baffle.

Preferably, a plurality of continuous teeth are arranged between the starting point of the percussion of the rack and the A teeth.

Preferably, the tooth shapes of the continuous teeth, the a teeth, the B teeth, and the C teeth are all the same.

The utility model provides an anastomat, which comprises an execution part and an instrument main body for installing the execution part, wherein the instrument main body comprises a shell, a firing handle pivoted with the shell, a rack plectrum and a rack plectrum baffle, and the firing handle is connected with the rack through the rack plectrum; the rack is in an interval tooth shape, the rack is provided with a tooth A positioned at the limit firing position of the first nail bin and a tooth B positioned at the limit firing position of the second nail bin, a tooth-shaped structure is not arranged between the tooth A and the tooth B, and the length of the first nail bin is smaller than that of the second nail bin; the rack plectrum baffle is connected with the shell in a sliding manner, and the larger the length of a nail bin arranged in the execution part is, the farther the rack plectrum baffle is away from the rotating center of the firing handle.

It should be noted that, specific lengths of the first staple cartridge and the second staple cartridge herein may be determined according to needs in an actual operation, and of course, a C tooth located at the third limit staple cartridge limit firing position, a D tooth located at the fourth limit staple cartridge limit firing position, and the like (no tooth structure exists between the B tooth and the C tooth and between the C tooth and the D tooth) may be provided behind the B tooth according to actual needs.

After the trigger handle triggers, the rack plectrum contacts with the tooth form on the rack and drives the rack to move towards the direction close to the executive component. When the first nail bin is installed, under the limitation of the rack plectrum baffle, the limit position which can be contacted by the rack plectrum is A teeth, when the rack plectrum props against the A teeth, the executive component executes in place, cuts and sews tissues to the limit position, at the moment, the firing handle is fired again, and the executive component cannot continue to advance because the rack plectrum cannot prop against the B teeth; for the situation of installing the second nail bin, the rack plectrum baffle is farther away from the rotation center of the percussion handle, and the rack plectrum can still be abutted against the B teeth, so the executing component can still continue to advance after reaching the stroke tail end of the first nail bin until the executing component advances to the stroke tail end of the second nail bin.

Therefore, the utility model provides an anastomat both applicable in the nail storehouse of different specifications, realized again and set up different percussion distances according to the nail storehouse subassembly of difference, solved the short stroke nail storehouse and still can continue the problem of percussion after arriving the stroke tail end, avoided the apparatus to damage or to patient's extra injury.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art stapler adapted to fit a single staple cartridge;

FIG. 2 is a schematic diagram of a prior art stapler adapted to accommodate a plurality of staple cartridges;

FIG. 3 is a schematic view of a firing configuration of an embodiment of the stapler provided by the present invention;

FIG. 4 is a schematic structural view of the rack of FIG. 3;

FIG. 5 is an exploded view of the stapler of FIG. 3 firing 30 a staple cartridge;

FIG. 6 is an exploded view of the stapler of FIG. 3 firing 45 a staple cartridge.

In fig. 1-6:

1 is an instrument main body, 11 is a shell, 12 is a firing handle, 13 is a rack plectrum, 14 is a rack, 141 is A teeth, 142 is B teeth, 143 is C teeth, 144 is continuous teeth, 15 is a rack plectrum baffle and 2 is an execution part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide an anastomat, through setting up the non-complete tooth of rack and rack plectrum dog position is adjustable, realized setting up the function of different percussion distances according to different nail storehouse subassemblies.

Referring to fig. 1-6, fig. 1 is a schematic structural view of a stapler adapted to a single staple cartridge in the prior art; FIG. 2 is a schematic diagram of a prior art stapler adapted to accommodate a plurality of staple cartridges; FIG. 3 is a schematic view of a firing configuration of an embodiment of the stapler provided by the present invention; FIG. 4 is a schematic structural view of the rack of FIG. 3; FIG. 5 is an exploded view of the stapler of FIG. 3 firing 30 a staple cartridge; FIG. 6 is an exploded view of the stapler of FIG. 3 firing 45 a staple cartridge.

The utility model provides an anastomat, which comprises an executing component 2 and an instrument main body 1 provided with the executing component 2, wherein the instrument main body 1 comprises a shell 11, a firing handle 12 pivoted with the shell 11, a rack 14, a rack plectrum 13 and a rack plectrum baffle 15, and the firing handle 12 is connected with the rack 14 through the rack plectrum 13; the rack 14 is in an interval tooth shape, the rack 14 is provided with an A tooth 141 positioned at a first nail bin limit firing position and a B tooth 142 positioned at a second nail bin limit firing position, a tooth-shaped structure is not arranged between the A tooth 141 and the B tooth 142, and the length of the first nail bin is smaller than that of the second nail bin; the rack paddle 15 is slidably connected to the housing 11, and the longer the length of the magazine mounted in the actuator 2 is, the farther the rack paddle 15 is from the center of rotation of the firing handle 12.

A-teeth 141 and B-teeth 142 represent the extreme firing position of the first staple cartridge and the extreme firing position of the second staple cartridge, respectively, i.e., the distance from the firing start of rack 14 to A-teeth 141 is equal to the stroke length of the first staple cartridge and the distance from the firing start of rack 14 to B-teeth 142 is equal to the stroke length of the second staple cartridge.

It should be noted that, specific lengths of the first staple cartridge and the second staple cartridge herein may be determined according to needs in an actual surgical operation, and of course, a C tooth 143 located at the third limit staple cartridge limit firing position, a D tooth located at the fourth limit staple cartridge limit firing position, and the like (no tooth structure between the B tooth and the C tooth and between the C tooth and the D tooth) may be provided behind the B tooth 142 according to actual needs.

The position of the rack pull plate baffle 15 is affected by the length of the nail bin at the execution part 2, and as one end of the rack pull plate baffle 15 close to the firing handle 12 is abutted against the execution part 2, the longer the length of the installed nail bin is, the farther the rack pull plate baffle 15 is from the firing handle 12.

The rack paddle 15 is slidably connected to the housing 11 to meet the need to change the distance from the rack paddle 15 to the center of rotation of the firing handle 12. Preferably, one of the shell 11 and the rack shifting piece baffle 15 can be provided with a sliding groove, and the other can be provided with a sliding block in clamping fit with the sliding groove; one end of the rack pull piece baffle 15 far away from the firing handle 12 is connected with the shell 11 through an elastic piece.

Preferably, one end of the elastic element is fixedly connected with the shell 11, and the other end of the elastic element is abutted against or connected with the end face of the rack shifting piece baffle 15.

When the elastic member abuts only the end face of the rack paddle stop 15, the length of the chute should be set to be equal to or greater than the natural length of the elastic member in consideration of the problem of the return of the rack paddle stop 15.

Preferably, a spring can be selected as the elastic member, and the parameters of the spring, such as material and size, refer to the prior art according to the actual production requirements, and are not described herein again.

Therefore, one end of the rack paddle retainer 15 is abutted by the actuator 2, and the other end is connected to the elastic member, so that the position of the rack paddle 15 is changed according to the length of the actuator 2.

Preferably, the number of the sliding grooves can be two, and the two sliding grooves are perpendicular to the two ends of the rack shifting piece baffle 15 respectively, so that the stability of sliding connection between the rack shifting piece baffle 15 and the shell 11 is improved.

In addition, a plurality of gears corresponding to different nail bins can be arranged on the shell 11, and the gears of the rack plectrum baffle 15 can be changed in a manual adjusting mode.

After the firing handle 12 is fired, the rack poke piece 13 contacts with the tooth form on the rack 14 and drives the rack 14 to move towards the direction close to the execution part 2. When the first nail bin is installed, please refer to fig. 5, under the limit of the rack dial plate baffle 15, the limit position where the rack dial plate 13 can contact is the a tooth 141, when the rack dial plate 13 abuts against the a tooth 141, the executing component 2 executes to the position, cuts and sews tissues to the limit position, at this time, the firing handle 12 is fired again, and the executing component 2 cannot advance continuously because the rack dial plate 13 cannot abut against the B tooth 142; for the case of installing the second nail bin, the rack plectrum baffle 15 is farther away from the rotation center of the firing handle 12, and the rack plectrum 13 can still abut against the B teeth 142, so the execution component 2 can still continue to advance after the stroke tail end of the first nail bin is reached until the stroke tail end of the second nail bin is reached.

On the basis of the above embodiment, the rack 14 may further be provided with a C tooth 143 located at the third cartridge limit firing position, and a toothless structure is provided between the B tooth 142 and the C tooth 142; the length of the second staple cartridge is less than the length of the third staple cartridge.

Referring to fig. 6, when the second magazine is installed, the limit position which the rack paddle 13 can contact is the tooth B142, when the rack paddle 13 abuts against the tooth B142, the executing component 2 executes to the right position, cuts and sews tissues to the limit position, at this time, the firing handle 12 is fired again, and the executing component 2 cannot advance continuously because the rack paddle 13 cannot abut against the tooth C143; in the case of installing the third nail bin, the rack plectrum baffle 15 is farther away from the rotation center of the firing handle 12, and the rack plectrum 13 can still abut against the C-shaped teeth 143, so that the execution component 2 can still continue to advance after reaching the stroke tail end of the second nail bin until the stroke tail end of the third nail bin is reached.

In a specific embodiment, the rack 14 is provided with a tooth 141A at the limit position of 30 nail bins, a tooth 142B at the limit position of 45 nail bins and a tooth 143C at the limit position of 60 nail bins.

Preferably, referring to FIG. 4, several consecutive teeth 144 may be provided between the start of firing of rack 14 and A-tooth 141 to reduce the firing force required for each firing by increasing the number of firings.

Preferably, the tooth shapes of the continuous teeth 144, the teeth a 141, the teeth B142 and the teeth C143 are all the same, so as to facilitate the processing of the rack 14 and reduce the production cost. The specific tooth shape is determined by referring to the prior art according to the actual production requirements, and is not described herein again.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The anastomat provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A stapler comprises an execution part (2) and an apparatus main body (1) for installing the execution part (2), and is characterized in that the apparatus main body (1) comprises a shell (11), a firing handle (12) pivoted with the shell (11), a rack (14), a rack plectrum (13) and a rack plectrum baffle (15), wherein the firing handle (12) is connected with the rack (14) through the rack plectrum (13);

the rack (14) is in a spaced tooth shape, the rack (14) is provided with an A tooth (141) positioned at a first nail bin limit firing position and a B tooth (142) positioned at a second nail bin limit firing position, a toothless structure is arranged between the A tooth (141) and the B tooth (142), and the length of the first nail bin is smaller than that of the second nail bin;

the rack plectrum baffle (15) is connected with the shell (11) in a sliding mode, and the larger the length of a nail bin installed in the execution part (2), the farther the rack plectrum baffle (15) is from the rotating center of the firing handle (12).

2. The stapler according to claim 1, wherein said rack (14) further includes a C-tooth (143) disposed thereon at a third cartridge limit firing position, said B-tooth (142) and said C-tooth (143) being free of tooth formations therebetween;

3. The anastomat according to claim 2, wherein one of the shell (11) and the rack shifting sheet baffle plate (15) is provided with a sliding groove, and the other one is provided with a sliding block which is in clamping fit with the sliding groove;

one end, far away from the firing handle (12), of the rack shifting piece baffle (15) is connected with the shell (11) through an elastic piece.

4. The stapler according to claim 3, wherein one end of the elastic member is fixedly connected with the housing (11), and the other end is abutted against or connected with an end face of the rack paddle baffle (15).

5. The stapler according to claim 3, wherein the number of the sliding grooves is two, and the two sliding grooves are respectively perpendicular to two ends of the rack paddle baffle (15).

6. The stapler according to any one of claims 2-5, wherein a number of consecutive teeth (144) are provided between the starting point of firing of the rack (14) and the A-tooth (141).

7. The stapler according to claim 6, wherein the tooth shapes of the four of the continuous tooth (144), the A tooth (141), the B tooth (142) and the C tooth (143) are all the same.