CN209826839U - Clamp for nail anvil of anastomat - Google Patents

Abstract

The utility model relates to a clamp for nail anvil of anastomat, which is characterized in that the clamp comprises two clamp mouths and two clamp arms, wherein the two clamp mouths are respectively arranged at one ends of the two clamp arms, the two clamp arms are hinged together through a hinged joint, and the clamp mouths are of arc-shaped structures; this clamp compact structure, the centre gripping is effectual, not only can realize the centre gripping to the nail anvil through centre gripping well core rod to convenient put into the nail anvil and need carry out anastomotic alimentary canal or intestinal in, with effectively solving the drawback among the prior art, this clamp has good protection effect moreover, can effectively remind and prevent that the user from exerting oneself too big, avoids damaging the well core rod of clamp and nail anvil.

Description

Clamp for nail anvil of anastomat

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to a clamp for anastomat nail anvil.

Background

At present, an anastomat is a common medical instrument in surgical operations such as gastrointestinal surgery, thoracic surgery and the like, the main working principle is to use a titanium nail to perform separation or anastomosis on tissues, the anastomat is generally called as a circular anastomat or a tubular anastomat and the like, and in practical application, a nail anvil of the anastomat is placed into one end of a digestive tract or an intestinal tract which is subjected to purse string suture and is butted with a central puncture rod of the anastomat, the other end of the central puncture rod penetrates out of the digestive tract to be anastomosed, so that cutting anastomosis is realized. By the method, the operation time can be effectively shortened, the operation quality is improved, support is provided for minimally invasive operations of tumors such as gastric cancer, intestinal cancer and esophageal cancer, and the method is widely applied in clinic.

The nail anvil is a common component in the anastomat, and the nail anvil commonly used in the prior art is usually butted with a central puncturing rod of an anastomat body into a whole when in use, so that the anastomosis is realized. However, before anastomosis, the nail anvil needs to be manually placed into the alimentary canal or the intestinal tract to be anastomosed, however, in the prior art, no instrument special for clamping the nail anvil exists, so that the operation of placing the nail anvil into the alimentary canal or the intestinal tract is troublesome and difficult; particularly, when the laparoscopic nail anvil is operated, the clamping of the nail anvil is difficult, for example, the existing nail anvil holder used under the laparoscopic is usually a center rod for transversely clamping the nail anvil, and because the contact area is small during clamping, the clamping is not firm, and the nail anvil is easy to shake; moreover, in special cases, for example, when a specimen is taken through a natural orifice, the anvil needs to be fed into the abdominal cavity through a body cavity (rectum or vagina) before anastomosis because the abdominal wall has no auxiliary incision, and the method of laterally clamping the anvil cannot achieve the above operation, and the current other instruments cannot achieve the purpose well.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the clamp for the nail anvil of the anastomat is compact in structure and good in clamping effect, the nail anvil can be clamped by the clamping center rod, the nail anvil can be conveniently placed into a digestive tract or an intestinal tract which needs to be anastomosed, and therefore the defects in the prior art can be effectively overcome.

The utility model adopts the technical proposal that:

the clamp for the nail anvil of the anastomat comprises two clamp mouths and two clamp arms, wherein the two clamp mouths are respectively arranged at one ends of the two clamp arms, the two clamp arms are hinged together through a hinged joint, and the clamp mouths are of arc-shaped structures.

Preferably, the clamp mouth is of a circular arc structure or an elliptic arc structure.

Furthermore, the forceps arms are connected to one end of the forceps mouth or connected to the outer side face of the forceps mouth.

In a preferable scheme, the length of the forceps mouth is 1-3 cm.

Preferably, the total length of the clamp is 30-50 cm.

Furthermore, the pliers comprise two handles which are respectively arranged at the other ends of the two pliers arms.

Preferably, the two handles are both ring-shaped structures.

Furthermore, the clamp arm, the clamp mouth connected with the clamp arm and the handle are integrally formed components.

Furthermore, the pliers comprise an anti-skidding structure, and the anti-skidding structure is arranged on the inner side surface of the pliers mouth.

In a preferred scheme, the anti-slip structure is a frosted layer or a silica gel layer.

Furthermore, the tong arm is provided with a bending part, the bending part is arranged between the hinged joint and the tong mouth, and the bending angle of the bending part is 0-15 degrees.

Furthermore, the clamp comprises a spring, one end of the spring is fixed on one side of the clamp arm or the handle far away from the clamp mouth, the other end of the spring corresponds to the other clamp arm or the handle, and the spring is used for preventing the clamping force of the clamp mouth from being too large.

Furthermore, the clamp comprises a limiting block, one end of the limiting block is fixed on the clamp arm or the handle far away from one side of the clamp mouth, the spring is sleeved on the outer side of the limiting block, and the length of the spring is greater than that of the limiting block.

In a preferred scheme, the clamp comprises a limiting column and a limiting cylinder, wherein the limiting cylinder is a cylindrical cylinder, one end of the limiting cylinder is fixed on one of the clamp arms or the handle, a spring is arranged in the cylindrical cylinder, one end of the limiting column is fixed on the other of the clamp arms or the handle, the limiting column corresponds to the limiting cylinder, and the limiting column is used for inserting the limiting cylinder and extruding the spring in the closing process of the two clamp arms.

Compared with the prior art, use the utility model provides a pair of a clamp for anastomat nail anvil, compact structure, the centre gripping is effectual, not only can realize the centre gripping to the nail anvil through center pin rod in the centre gripping to convenient put into need carrying out anastomotic alimentary canal or intestinal with the nail anvil, with effectively solving the drawback among the prior art, this clamp has good protection effect moreover, can effectively remind and prevent that the user from exerting oneself too big, avoids damaging the center pin rod of clamp and nail anvil.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Drawings

FIG. 1 is a schematic view of an anvil of the type commonly used in the prior art.

Fig. 2 is a schematic structural diagram of a clamp provided in embodiment 2 of the present invention.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic cross-sectional view of the clamp provided in embodiment 2 of the present invention, after clamping the center rod, wherein the clamp mouth is of an arc-shaped structure.

Fig. 5 is a schematic cross-sectional view of the clamp provided in embodiment 2 of the present invention, after clamping the center rod, wherein the clamp mouth is an elliptic arc structure.

Fig. 6 is a schematic structural view of another clamp provided in embodiment 2 of the present invention.

Fig. 7 is a front view of another clamp provided in embodiment 3 of the present invention.

Fig. 8 is a partial schematic view I of fig. 2.

Fig. 9 is a schematic structural view of another clamp provided in embodiment 4 of the present invention.

Fig. 10 is a partially enlarged schematic view of fig. 9.

Description of the drawings

An anvil 101, a central bar 102,

a forceps mouth 201, a forceps arm 202, a handle 203, a hinged joint 204, a bending part 205,

spring 301, stopper 302, spacing post 303, spacing section of thick bamboo 304.

Detailed Description

As mentioned in the background, the anvil 101 commonly used in the prior art is usually connected with the center rod 102 into a whole, as shown in fig. 1, when the anvil 101 is placed into the alimentary tract or intestinal tract to be anastomosed, the anvil 101 can be clamped by the center rod 102, thereby facilitating the operation of medical staff.

In the prior art, the center rod 102 is generally a cylindrical structure, and the length is generally about 3-5 cm; the utility model provides a clamp for anastomat nail anvil 101, including two pincers mouths 201 and two tong arms 202, two pincers mouths 201 set up respectively in the one end of two tong arms 202, two tong arms 202 pass through articulated joint 204 and articulate together, pincers mouth 201 is the arc structure, the arc structure is used for with the structure looks adaptation of center rod 102, when utilizing this clamp centre gripping center rod 102, pincers mouth 201 centre gripping along center rod 102's length direction, and the pincers mouth 201 of arc structure and the laminating of center rod 102 of cylinder structure are better, and area of contact is bigger, not only makes the clamping effect of this clamp better, and also be convenient for utilize clamp to remove center rod 102 and nail anvil 101, especially remove along center rod 102's length direction, not only is favorable to putting into the process of alimentary canal or intestinal with nail anvil 101 succinct more, convenient; but also can effectively avoid the defects in the prior art.

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. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 2 and fig. 3, the present embodiment provides a clamp for an anvil 101 of a stapler, including two clamp mouths 201 and two clamp arms 202, wherein the two clamp mouths 201 are respectively disposed at one end of the two clamp arms 202, the two clamp arms 202 are hinged together through a hinge joint 204, and the clamp mouths 201 are arc-shaped structures;

in a further scheme, the clamp further comprises two handles 203, wherein the two handles 203 are respectively arranged at the other ends of the two clamp arms 202; the handle 203 is mainly convenient for a user to hold and operate the clamp, and the shape and the structure of the handle 203 can be determined according to actual requirements; by way of example, in the present embodiment, both of the handles 203 may be in a ring structure; the clamp has the advantages of attractive appearance, simple structure, convenience in production and manufacture and contribution to reducing the cost of the clamp.

In a preferred scheme, the forceps jaws 201 may have an arc-shaped structure, as shown in fig. 2, when the two forceps jaws 201 are closed, the central rod 102 on the anvil 101 may be firmly clamped between the two forceps jaws 201, as shown in fig. 4 for example, it can be seen that the forceps jaws 201 have a good wrapping property on the central rod 102, and a good clamping effect is achieved; the clamp mouth 201 can also adopt an elliptic arc structure, as shown in fig. 5, the clamp mouth 201 adopting the elliptic arc structure has a width larger than that of the clamp mouth 201 adopting the circular arc structure, and when the clamp is used for clamping the central rod 102, the clamp mouth 201 is more convenient to align to the central rod 102, so that the process of clamping the central rod 102 between the two clamp mouths 201 is simpler, and as shown in the figure, the effect after clamping is achieved.

In the solution provided in this embodiment, the forceps arms 202 are respectively connected to one end of the forceps mouth 201, as shown in fig. 2 or fig. 3; in another scheme, the forceps arms 202 may also be respectively connected to outer side surfaces of the forceps tips 201 (in this embodiment, in the forceps, surfaces of the two forceps tips 201 corresponding to each other are inner side surfaces, and surfaces deviating from each other are outer side surfaces, which is not described herein again), as shown in fig. 6.

In the nail anvil 101 commonly used in the prior art, the effective length of the center rod 102 is usually about 3cm, and in the present clamp, the length of the clamp mouth 201 can be determined according to the actual requirement, so in an optimal scheme provided in this embodiment, the length of the clamp mouth 201 is preferably 1-3 cm.

In the preferable scheme provided by the embodiment, the total length of the clamp is preferably 30-50 cm.

In a further scheme, the clamp arm 202 and the clamp mouth 201 connected with the clamp arm 202 are integrally formed members, or the clamp arm 202 and the clamp mouth 201 connected with the clamp arm 202 and the handle 203 are integrally formed members; not only is convenient for processing and manufacturing, but also is beneficial to reducing the cost.

Furthermore, the clamp also comprises an anti-slip structure, wherein the anti-slip structure is arranged on the inner side surface of the clamp mouth 201 and is used for increasing friction force so as to clamp the nail anvil 101 more firmly and prevent slipping.

In a preferred embodiment provided in this embodiment, the anti-slip structure may be a frosted layer, that is, a frosted layer is disposed on the inner side surface of the forceps nozzle 201 to increase the roughness of the inner side surface of the forceps nozzle 201, so as to increase the friction force; in another preferred scheme, the anti-slip structure may be a silica gel layer, that is, the silica gel layer is disposed on the inner side surface of the forceps mouth 201, as is well known, silica gel generally has certain elasticity and deformability, and can be deformed properly under the action of pressure, so that when the silica gel layer is disposed on the inner side surface of the forceps mouth 201, and when the center rod 102 is clamped in the nail anvil 101, the silica gel layer directly contacts with the center rod 102, when the clamping force is increased, the forceps mouth 201 compresses the center rod 102 through the silica gel layer, and deforms in the compression process to adapt to the shape structure of the center rod 102, so that the silica gel layer is better attached to the center rod 102, the wrapping performance is better, and the center rod 102 is less prone to falling off due to deformation of the silica gel layer.

Example 2

The main difference between this embodiment 2 and the above embodiment 1 is that in the clamp for the stapler anvil 101 provided by this embodiment, the clamp arm 202 is further provided with a bending portion 205, the bending portion 205 is disposed between the hinged joint 204 and the clamp mouth 201, and the bending angle of the bending portion 205 is θ.

As shown in fig. 7, in the present embodiment, the range of the bending angle θ may preferably be 0 to 15 degrees (it is understood that the bending angle in the present embodiment does not include 0 degree).

The arrangement of the bending part 205 can change the clamping direction of the forceps mouth 201, which is beneficial to the convenience and the handiness of medical staff in the actual use process; especially, in the place where the operation space is limited, the arrangement of the bending part 205 can effectively change the operation direction of the medical staff, so as to smoothly complete the operation.

Example 3

The main difference between the present embodiment 3 and the above embodiment 1 is that the clamp for the anvil 101 of the stapler provided by the present embodiment further includes a spring 301, one end of the spring 301 is fixed to the forceps arm 202 or the handle 203 far from the side of the forceps mouth 201, and the other end corresponds to the other forceps arm 202 or the handle 203, and the spring 301 is used for preventing the clamping force of the forceps mouth 201 from being too large; that is, in the process of using the clamp, when the user clamps two clamp mouths 201 through the handle 203, when the two handles 203 are close to a certain degree (namely, when the clamping force reaches a certain degree), the spring 301 is compressed to generate the rebound force, on one hand, the user can judge the clamping effect according to the rebound force, the problem that the clamp or the central rod 102 is damaged due to overlarge clamping force can be avoided, on the other hand, when the clamping force reaches a certain degree, the rebound force of the spring 301 which is larger needs to be overcome by further increasing the clamping force, and therefore the clamp and the central rod 102 can be effectively protected from being damaged.

In a further scheme, the clamp comprises a limit block 302, one end of the limit block 302 is fixed to the clamp arm 202 or the handle 203 far away from one side of the clamp mouth 201, the spring 301 is sleeved outside the limit block 302, and the length of the spring 301 is greater than that of the limit block 302, as shown in fig. 8, in the use process, when the clamping force reaches a certain degree, the spring 301 is firstly compressed, then the clamping force can be continuously increased, and when the clamping force reaches a set safety value, the limit block 302 is in contact with (or is called as being in contact with) the clamp arm 202 or the handle 203 on the other side of the clamp mouth 201, so that the clamping force cannot be increased, and the safety protection effect is achieved.

Example 4

The main difference between this embodiment 4 and the above embodiment 1 is that the clamp for the stapler anvil 101 provided by this embodiment further includes a limiting column 303 and a limiting cylinder 304, the limiting cylinder 304 is a cylindrical cylinder, one end of the limiting cylinder 304 is fixed to the forceps arm 202 or the handle 203, a spring 301 is disposed in the cylindrical cylinder, one end of the limiting column 303 is fixed to the other forceps arm 202 or the handle 203, the limiting column 303 corresponds to the limiting cylinder 304, as shown in fig. 9 and 10, the limiting column 303 is used for inserting the limiting cylinder 304 and pressing the spring 301 in the limiting cylinder 304 during the closing process of the two forceps arms 202.

That is, in the process of clamping the center rod 102 by using the clamp, when the clamping force reaches a certain degree, the spring 301 is inserted into the corresponding limiting barrel 304 and starts to compress the spring 301 in the limiting barrel 304, and the larger the clamping force is, the larger the rebound force of the spring 301 is, so that the clamp and the clamped object (i.e., the center rod 102) can be safely protected in the clamping process.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims (9)

1. The clamp for the nail anvil of the anastomat is characterized by comprising two clamp mouths and two clamp arms, wherein the two clamp mouths are respectively arranged at one ends of the two clamp arms, the two clamp arms are hinged together through a hinged joint, the clamp mouths are of arc-shaped structures, and the length directions of the clamp mouths are consistent with the length directions of the clamp arms at the joint; the tong arm still is provided with the portion of bending, the portion of bending sets up between articulated joint and the pincers mouth, the bending angle of the portion of bending is 0 ~ 15 degrees.

2. The clamp for the anvil of a stapler according to claim 1, wherein the jaw is configured in a circular arc or an elliptical arc.

3. The clamp for an anvil of a stapler according to claim 1, wherein the clamp arm is connected to one end of the jaw or to an outer side of the jaw.

4. The clamp for the anvil of the anastomat according to claim 1, wherein the length of the clamp mouth is 1-3 cm.

5. The clamp for the anvil of a stapler according to claim 1, wherein the total length of the clamp is 30-50 cm.

6. The forceps for the nail anvil of the anastomat according to claim 1, further comprising an anti-slip structure, wherein the anti-slip structure is arranged on the inner side surface of the forceps mouth, and the anti-slip structure is a frosting layer or a silica gel layer.

7. The clamp for the anvil of the anastomat according to claim 1, further comprising a spring, wherein one end of the spring is fixed on the forceps arm or the handle at one side far away from the forceps mouth, the other end of the spring corresponds to the other forceps arm or the handle, and the spring is used for preventing the clamping force of the forceps mouth from being too large.

8. The forceps for the nail anvil of the anastomat according to claim 7, further comprising a limiting block, wherein one end of the limiting block is fixed to the forceps arm or the handle far away from the forceps mouth, the spring is sleeved outside the limiting block, and the length of the spring is greater than that of the limiting block.

9. The clamp for the nail anvil of the anastomat according to claim 1, which comprises a limiting column and a limiting cylinder, wherein the limiting cylinder is a cylindrical cylinder, one end of the limiting cylinder is fixed on one of the forceps arms or the handle, a spring is arranged in the cylindrical cylinder, one end of the limiting column is fixed on the other of the forceps arms or the handle, the limiting column corresponds to the limiting cylinder, and the limiting column is used for inserting the limiting cylinder and extruding the spring in the process of closing the two forceps arms.