Stitching instrument

Abstract

The utility model relates to a stitching instrument. The device comprises a handle, a main body shaft, a push rod assembly and an executing mechanism, the executing mechanism comprises a nail bin seat, a nail bin main body and a nail abutting seat, the near ends of the nail abutting seat, the nail bin seat and the nail bin main body are of a straight structure and extend in the axial direction of the main body shaft, and the far ends of the nail abutting seat, the nail bin seat and the nail bin main body are bent downwards; the bending degree of the far-end portion of the nail bin base and the bending degree of the far-end portion of the nail bin body are consistent and larger than or equal to the bending degree of the far-end portion of the nail abutting base. The nail abutting base and the nail bin body are spaced, and a gap allowing tissue to enter is formed between the nail abutting base and the nail bin body. According to the stitching instrument, when a prepuce operation is carried out, the far-end portion of the executing mechanism is bent downwards and can be attached to the periphery of a genital organ, and therefore a doctor can conveniently suture a prepuce along the periphery of the genital organ; and through the arrangement of a straight moving structure at the near end part of the executing mechanism, the prepuce can be fixed, so that the prepuce is not easy to slip off, and a doctor can suture more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of suturing devices, in particular to a suturing device used for circumcision surgery or annular suturing. Background Art

[0002] The suture device commonly used in traditional circumcision surgery is mostly a circumcision suture device. When using it, the genitals are first pressed against the glans hood, and then the foreskin is wrapped around the glans hood and the front end of the foreskin is tied at the tail of the glans hood. The handle is operated, and the transmission moves the nail pusher and the cutting knife forward. The nail pusher, the nail magazine and the nail support work together to complete the suturing, and then the cutting knife and the knife pad cooperate to complete the cutting. However, in actual operation, the nail support is often not positioned accurately and the frenulum of the foreskin is damaged. The applicant thought of suturing the foreskin first and then cutting it with scissors, so as to avoid the damage of the frenulum of the foreskin during the operation. However, the existing suture device does not fit the genitals, and is therefore not suitable for suturing the foreskin. Utility Model Content

[0003] The utility model aims to provide a novel suturing device which is suitable for circumcision surgery or annular suturing.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A stapler comprises a handle, a main body shaft mounted on the handle, a push rod assembly arranged in the main body shaft and connected to the handle, and an actuator arranged at the distal end of the main body shaft, the actuator comprising:

[0006] The staple cartridge comprises a staple cartridge seat connected to the distal end of the main body shaft, a staple cartridge body disposed in the staple cartridge seat, and staples movably disposed in the staple cartridge body, wherein the staples have a plurality of staples arranged along the extension direction of the staple cartridge body.

[0007] A nail support is connected to the distal end of the main shaft and is arranged opposite to the nail magazine.

[0008] Controlled by the handle, the push rod assembly can move toward the distal end of the staple magazine body and push the staple toward the staple holder until it is pushed out of the staple magazine body, the staple holder, the staple magazine seat and the proximal end of the staple magazine body are straight structures and extend axially along the main body axis, the distal ends of the staple holder, the staple magazine seat and the staple magazine body are bent downward, the bending degrees of the distal ends of the staple magazine seat and the distal ends of the staple magazine body are consistent and greater than or equal to the distal ends of the staple holder, the staple holder and the staple magazine body are spaced apart and there is a gap between the two for tissue to enter.

[0009] The stapler of the present application can place the foreskin between the stapler body and the stapler seat when performing circumcision surgery. Due to the downward bending setting of the distal end of the actuator, it can fit with the periphery of the genitals, so that it is convenient for the doctor to suture the foreskin along the periphery of the genitals; through the setting of the straight structure of the proximal end of the actuator, the foreskin can be fixed, so that the foreskin is not easy to slip, which makes it more convenient for the doctor to suture. After the suturing is completed, the doctor uses scissors to cut it off, which can avoid damage to the frenulum of the foreskin during the operation. Of course, the stapler can also be used in the cavity or in other places where circular suturing is required. The stapler with this structure is simple in structure and easy to use.

[0010] Preferably, the degree of curvature of the distal end of the staple cartridge body is greater than that of the distal end of the anvil seat, so that the gap between the distal end of the staple cartridge body and the distal end of the anvil seat gradually decreases from far to near. This arrangement facilitates tissue entry and fixation.

[0011] Preferably, the distal ends of the nail support, the nail magazine seat and the nail magazine body are arc-shaped structures.

[0012] In some embodiments, the angle of the arc structure is 60° to 90°, for example, 60°, 70°, 80° or 90°.

[0013] In some embodiments, the inner radius of the distal end portion of the nail support is 13 to 20 mm, and the inner radius of the distal end portion of the nail magazine body and the distal end portion of the nail magazine seat are independently 7 to 13 mm.

[0014] Furthermore, the inner radius of the distal end of the anvil is 15 to 18 mm, for example, 15 mm, 15.5 mm, 16 mm, 16.5 mm or 17 mm.

[0015] Furthermore, the inner radius of the distal end portion of the staple cartridge body and the distal end portion of the staple cartridge seat are independently 9 to 12 mm, and the inner radius of the distal end portion of the staple cartridge body is greater than the inner radius of the distal end portion of the staple cartridge seat.

[0016] In some embodiments, the lengths of the nail support, the nail magazine seat, and the proximal portion of the nail magazine body are independently 20 to 30 mm, more preferably 23 to 27 mm, for example, 25 mm.

[0017] In some embodiments, the widths of the anvil, the staple cartridge seat, and the proximal end of the staple cartridge body are independently 4 to 7 mm, more preferably 5 to 6 mm, for example 5.4 mm.

[0018] In some embodiments, the thickness of the anvil is 1 to 3 mm.

[0019] In some embodiments, the thickness of the nail magazine seat and the nail magazine body are independently 4 to 7 mm.

[0020] Preferably, an inclined guiding slope is provided between the bottom surface of the distal end portion of the staple cartridge body and its outer side surface, and the guiding slope at least partially extends out of the staple cartridge seat. The provision of the guiding slope makes it more convenient for tissues to enter the gap.

[0021] Preferably, the push rod assembly includes a push rod and a push block located at the distal end of the push rod, the push rod is a thin sheet and has deformation capability, and the push rod can be bent along the extension direction of the nail magazine body under the control of the handle, driving the push block to move toward the distal end of the nail magazine body and push the anastomosis staple.

[0022] Further preferably, the height of the distal end portion of the pushing block gradually increases from the distal end toward the proximal end thereof.

[0023] Preferably, the staple magazine body has a plurality of staple cavities and staple pushing grooves, and the plurality of staple magazines are arranged in sequence along the extension direction of the staple magazine body, the staples are arranged in the staple cavities and correspond to the staples one by one, and the staple magazine further comprises a staple pushing block movably arranged in the staple cavities and located below the staples, and the extension direction of the staple pushing grooves is consistent with that of the staple magazine body, and when the push rod assembly moves toward the distal end of the staple magazine body, the distal end of the push rod assembly is inserted into the staple pushing groove and pushes the staple pushing block to move so that the staples are pushed out.

[0024] Preferably, the main body shaft is rotatably arranged on the handle around its axis.

[0025] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0026] The suture device of the utility model can place the foreskin between the staple cartridge body and the staple holder when performing circumcision surgery. The distal end of the actuator is bent downward so that it can fit with the periphery of the genitalia, thereby facilitating the doctor to suture the foreskin along the periphery of the genitalia. The straight structure of the proximal end of the actuator can fix the foreskin so that it is not easy to slip off, thereby making it more convenient for the doctor to suture. After the suturing is completed, the doctor can cut it off with scissors, thus avoiding damage to the frenulum of the foreskin during the operation.

[0027] The suturing device of the utility model has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the stapler in Example 1;

[0029] Figure 2is an exploded view of the actuator of the stapler in Example 1;

[0030] Figure 3 is a schematic structural diagram of the push rod assembly in Example 1;

[0031] Figure 4 is a cross-sectional view of the actuator and push rod assembly in Example 1;

[0032] Figure 5 for Figure 4 A magnified schematic diagram of part A;

[0033] Figure 6 It is a structural schematic diagram of the push rod assembly and the nail pushing block of the stapler in Example 1 before suturing;

[0034] Figure 7 It is a schematic structural diagram of the push rod assembly and the nail pushing block of the stapler in Example 1 after suturing;

[0035] Figure 8 It is a schematic diagram of the structure of the staple pushing block and the anastomotic staples in Example 1;

[0036] Wherein: 1. handle; 11. rotating member;

[0037] 2. Main axis;

[0038] 3. Actuator; 31. Nail magazine body; 311. Proximal end of the nail magazine body; 312. Distal end of the nail magazine body; 3121. Guide slope; 3122. Inner side of the distal end of the nail magazine body; 313. Nail cavity; 314. Nail pushing block; 3141. First nail pushing part; 3142. Second nail pushing part; 3143. Connecting part; 3144. Groove; 315. Staples; 32. Nail magazine seat; 321. Proximal end of the nail magazine seat; 322. Distal end of the nail magazine seat; 3221. Inner side of the distal end of the nail magazine seat; 33. Anvil seat; 331. Proximal end of the anvil seat; 332. Distal end of the anvil seat; 3321. Inner side of the distal end of the anvil seat; 34. Gap;

[0039] 4. Push rod;

[0040] 5. Push block; 51. Far end of the push block. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0042] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0043] In the description of the embodiments of the present invention, it should be understood that the terms "distal", "proximal", etc., indicating the position or positional relationship are defined by the position of the stapler when in use, wherein the side close to the operator is the proximal end, and the side away from the operator is the distal end. This is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0045] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0047] Example 1

[0048] A stapler, such as Figure 1 As shown, it includes a handle 1, a main shaft 2 installed on the handle 1, a push rod assembly arranged in the main shaft 2 and connected to the handle 1, and an actuator 3 arranged at the distal end of the main shaft 2.

[0049] like Figure 2 and Figure 4As shown, the actuator 3 includes a nail magazine and an anvil 33. The nail magazine includes a nail magazine seat 32 fixedly connected to the distal end of the main shaft 2 and a nail magazine body 31 disposed in the nail magazine seat 32. The anvil 33 is fixedly connected to the distal end of the main shaft 2 and is disposed opposite to the nail magazine, that is, the anvil surface of the anvil 33 faces the nail outlet surface of the nail magazine, and the anvil 33 and the nail magazine body 31 are spaced apart and have a gap 34 for tissue to enter. The anvil proximal portion 331, the nail magazine proximal portion 321 and the nail magazine body proximal portion 311 are straight structures and extend along the axial direction of the main shaft 2. The anvil distal portion 332, the nail magazine distal portion 322 and the nail magazine body distal portion 312 are bent downward, and the bending degree of the nail magazine distal portion 322 and the nail magazine body distal portion 312 is consistent and greater than or equal to the anvil distal portion 332. When a circular suture operation is required, such as a circumcision operation, the curved arrangement of the staple cartridge seat 32, the staple cartridge body 31 and the distal end portion 332 of the staple cartridge seat can fit the periphery of the genitalia, thereby facilitating the doctor to suture the foreskin along the periphery of the genitalia. However, in actual research, it is found that the curved arrangement alone cannot fix the foreskin, and the foreskin is prone to slipping along the curved direction. By setting a straight structure, it is convenient to fix the starting position, and the foreskin is not easy to slip, thereby facilitating the doctor to perform the suture operation.

[0050] As a preference, see Figure 5 The curvature of the distal end portion 312 of the staple cartridge body is greater than that of the distal end portion 332 of the staple cartridge body, so that the gap 34 between the distal end portion 312 of the staple cartridge body and the distal end portion 332 of the staple cartridge body gradually decreases from far to near. The gap 34 at the distal end is large, which facilitates the entry of tissue into the gap 34; the gap 34 at the proximal end is small, so that the tissue entering the gap 34 can be clamped, reducing the risk of it slipping.

[0051] Furthermore, the distal end portion 332 of the anvil, the distal end portion 322 of the nail magazine seat and the distal end portion 312 of the nail magazine body are arc structures, and the angle of the arc structure can be specifically designed according to actual needs, preferably 60° to 90°. As an explanation, the arc angle refers to the angle between the lines connecting the two endpoints of the arc to the center of the circle where the arc is located. The radius of the inner side 3321 of the distal end portion of the anvil is 13 to 20 mm, and the radii of the inner side 3122 of the distal end portion of the nail magazine body and the inner side 3221 of the distal end portion of the nail magazine seat are independently 7 to 13 mm, and the radius of the inner side 3122 of the distal end portion of the nail magazine body is greater than the radius of the inner side 3221 of the distal end portion of the nail magazine seat. In this embodiment, the radius of the inner side 3321 of the distal end portion of the anvil is 16.5 mm, and the radius of the inner side 3221 of the distal end portion of the nail magazine seat is 10 mm. The lengths of the proximal portion 331 of the nail anvil seat, the proximal portion 321 of the nail magazine seat and the proximal portion 311 of the nail magazine body are independently 20 to 30 mm, and the widths are independently 4 to 7 mm; the thickness of the nail anvil seat 33 is 1 to 3 mm, and the thicknesses of the nail magazine seat 32 and the nail magazine body 31 are independently 4 to 7 mm.

[0052] In order to facilitate the tissue to enter the gap 34, an inclined guide slope 3121 is provided between the bottom surface of the distal end portion 312 of the staple cartridge body and its outer side surface (i.e., the staple exit surface), and the guide slope 3121 at least partially extends out of the staple cartridge seat 32. The doctor can lift the tissue through the guide slope 3121, thereby facilitating the tissue to enter the gap 34.

[0053] The staple cartridge body 31 is provided with a plurality of staple cavities 313 along its extension direction, that is, both the proximal end portion 311 and the distal end portion of the staple cartridge body are provided with staple cavities 313, and the plurality of staple cavities 313 are arranged in a staggered manner, and the staple cavities 313 extend in a direction close to the staple anvil 33 and have staple cavity openings on the staple exit surface. The staple cartridge further includes staples 315 and a staple pusher block 314 movably arranged in the staple cavities 313, wherein the staples 315 are located between the staple pusher block 314 and the staple cavity opening, and can be pushed out of the staple cavity opening under the action of the staple pusher block 314. Figure 8 The staples 315 are roughly U-shaped, and their height is 1.5 to 2.5 mm. The staple pushing block 314 has a first staple pushing portion 3141 and a second staple pushing portion 3142 that are staggered and a connecting portion 3143 located therebetween. The first staple pushing portion 3141 and the second staple pushing portion 3142 are respectively located in the left and right adjacent staple cavities 313 and are adapted to the staple cavities 313. The upper ends of the first staple pushing portion 3141 and the second staple pushing portion 3142 have grooves 3144 for receiving the staples 315.

[0054] The nail magazine body 31 is also provided with a nail pushing groove (not shown in the figure), and the extending direction of the nail pushing groove is consistent with the nail magazine body 31. When the push rod assembly moves toward the distal end of the nail magazine body 31, the distal end of the push rod assembly is inserted into the nail pushing groove and pushes the nail pushing block 314 to move toward the direction close to the nail support seat 33 (such as Figure 6 As shown), so that the staples 315 are pushed out (as shown Figure 7 As shown), the stapler 33 is then stapled to the tissue with the cooperation of the stapler 33.

[0055] Specifically, see Figure 3 The push rod assembly includes a push rod 4 and a push block 5 fixedly connected to the distal end of the push rod 4. The push rod 4 is a thin sheet with deformation capability, which can be bent along the extension direction of the nail magazine body 31 under the control of the handle 1. A slide groove (not shown in the figure) is formed at the lower part of the nail magazine body 31 or between the nail magazine body 31 and the nail magazine seat 32. The extension direction of the slide groove is consistent with that of the nail magazine body 31 and is compatible with the push rod 4. The push rod 4 can slide in the slide groove under the control of the handle. The height of the distal end portion 51 of the push block gradually increases from its distal end to the proximal end. When the push rod assembly is in the pushing state, the push block 5 is inserted into the nail pushing groove and abuts against the nail pushing block 314, so that the nail pushing block 314 has a tendency to move toward the nail support seat 33.

[0056] In order to facilitate the operation of the doctor, the main shaft 2 is rotatably connected to the handle 1 through the rotating member 11, so that the actuator 3 can rotate around the axis of the main shaft 2. The handle 1 is configured to enable the push rod assembly to move toward the distal end of the staple cartridge body 31. The specific structure of the handle 1 can refer to the handle 1 of the stapler in the prior art, and this application will not be discussed in detail.

[0057] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A stapler, comprising a handle, a main shaft mounted on the handle, a push rod assembly disposed in the main shaft and connected to the handle, and an actuator disposed at the distal end of the main shaft, the actuator comprising: The staple cartridge comprises a staple cartridge seat connected to the distal end of the main body shaft, a staple cartridge body disposed in the staple cartridge seat, and staples movably disposed in the staple cartridge body, wherein the staples have a plurality of staples arranged along the extension direction of the staple cartridge body. A nail support is connected to the distal end of the main shaft and is arranged opposite to the nail magazine. Controlled by the handle, the push rod assembly can move toward the distal end of the staple magazine body and push the staple toward the staple holder until it is pushed out of the staple magazine body, and is characterized in that: the proximal ends of the staple holder, the staple magazine seat and the staple magazine body are straight structures and extend axially along the main body axis, the distal ends of the staple holder, the staple magazine seat and the staple magazine body are bent downward, the bending degrees of the distal ends of the staple magazine seat and the distal ends of the staple magazine body are consistent and are greater than or equal to the distal ends of the staple holder, and the staple holder is spaced from the staple magazine body and there is a gap between the two for tissue to enter.

2. The stapler according to claim 1, characterized in that: The degree of curvature of the distal end portion of the nail magazine body is greater than that of the distal end portion of the nail support seat, so that the gap between the distal end portion of the nail magazine body and the distal end portion of the nail support seat gradually decreases from far to near.

3. The stapler according to claim 1 or 2, characterized in that: The distal ends of the nail support, the nail magazine seat and the nail magazine body are arc-shaped structures.

4. The stapler according to claim 3, characterized in that: The angle of the arc structure is 60° to 90°; and / or, The inner radius of the distal end portion of the nail support is 13 to 20 mm, and the inner radius of the distal end portion of the nail magazine body and the distal end portion of the nail magazine seat are independently 7 to 13 mm.

5. The stapler according to claim 1, characterized in that: The lengths of the nail anvil, the nail magazine seat and the proximal ends of the nail magazine body are independently 20 to 30 mm, and the widths are independently 4 to 7 mm; the thickness of the nail anvil is 1 to 3 mm, and the thicknesses of the nail magazine seat and the nail magazine body are independently 4 to 7 mm.

6. The stapler according to claim 1, characterized in that: An inclined guiding slope is provided between the bottom surface of the distal end portion of the staple cartridge body and the outer side surface thereof, and the guiding slope at least partially extends out of the staple cartridge seat.

7. The stapler according to claim 1, characterized in that: The push rod assembly includes a push rod and a push block located at the distal end of the push rod. The push rod is a thin sheet and has deformation capability. Under the control of the handle, the push rod can be bent along the extension direction of the nail magazine body, driving the push block to move toward the distal end of the nail magazine body and push the anastomosis staples.

8. The stapler according to claim 7, characterized in that: The height of the distal end portion of the pushing block gradually increases from the distal end toward the proximal end.

9. The stapler according to claim 1, characterized in that: The staple magazine body has a plurality of staple cavities and staple pushing grooves, and the plurality of staple magazines are arranged in sequence along the extension direction of the staple magazine body. The staples are arranged in the staple cavities and correspond to the staples one by one. The staple magazine also includes a staple pushing block movably arranged in the staple cavities and located below the staples. The extension direction of the staple pushing groove is consistent with that of the staple magazine body. When the push rod assembly moves toward the distal end of the staple magazine body, the distal end of the push rod assembly is inserted into the staple pushing groove and pushes the staple pushing block to move so that the staples are pushed out.

10. The stapler according to claim 1, characterized in that: The main body shaft is rotatably arranged on the handle around its axis center line.

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