Nail cartridge assembly and medical stapler

Abstract

The present invention discloses a stapler assembly and a medical stapler, wherein the stapler assembly comprises a clamp device extending along a longitudinal axis, the clamp device comprises a first clamp and a second clamp that can be opened / closed; wherein: the stapler assembly further comprises a hawkbill provided at the distal end of the first clamp, the second clamp comprises an upper side facing the first clamp and a lower side opposite to the upper side, when the first clamp and the second clamp are relatively closed, the lower side defines a lower plane, the lower plane intersects with the hawkbill, and the maximum projection width of the hawkbill on the lower plane is greater than the maximum projection width of the clamp device on the lower plane. The stapler assembly provided by the present invention facilitates the insertion of the clamp and the clamping of tissues.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a stapler assembly and a medical stapler. Background Art

[0002] A medical stapler is a medical device that is often used in surgical operations on physiological tissues such as the intestines. It is a medical device that replaces traditional manual suturing. Due to the development of modern science and technology and the improvement of manufacturing technology, the medical staplers currently used in clinical practice are of reliable quality, easy to use, tight, and of appropriate tightness. In particular, they have the advantages of fast suturing, simple operation, and few side effects and surgical complications. Sometimes, they can also allow tumors that were previously unresectable to be removed. They are very popular and highly praised by clinical surgeons at home and abroad. The difference in the performance of this instrument plays a vital role in the overall surgical effect.

[0003] In the prior art, a linear medical stapler used for minimally invasive surgery includes an instrument body and a staple cartridge assembly matched with the instrument body, wherein the instrument body includes a housing and a firing handle disposed on the housing, and the staple cartridge assembly includes a staple cartridge connector and a clamp device located at the distal end of the staple cartridge connector. The clamp device includes a first clamp and a second clamp that can be opened / closed. During surgery, some surgical sites are relatively special and it is difficult for the clamp to extend around the tissue to be cut, such as blood vessels that are difficult to reach. Summary of the invention

[0004] The object of the present invention is to provide a staple cartridge assembly and a medical stapler, which facilitate the insertion of clamps and the clamping of tissues.

[0005] To achieve one of the above-mentioned purposes of the invention, an embodiment of the present invention provides a nail cartridge assembly, the nail cartridge assembly comprising a clamp device extending along a longitudinal axis, the clamp device comprising a first clamp and a second clamp that can be opened / closed;

[0006] Wherein: the nail magazine assembly also includes a beak piece arranged at the distal end of the first clamp, the second clamp has an upper side facing the first clamp and a lower side opposite to the upper side, when the first clamp and the second clamp are relatively closed, the lower side defines a lower plane, the lower plane intersects with the beak piece, and the maximum projection width of the beak piece on the lower plane is greater than the maximum projection width of the clamp device on the lower plane.

[0007] As a further improvement of an embodiment of the present invention, a plane perpendicular to the longitudinal axis is defined as a vertical plane, and a projection of the clamping device on the vertical plane is completely located within the projection range of the hawk's beak on the vertical plane.

[0008] As a further improvement of an embodiment of the present invention, the beak has a hollow portion, and when the first jaw and the second jaw are relatively closed, the hollow portion faces the engagement position of the first jaw and the second jaw.

[0009] As a further improvement of an embodiment of the present invention, the hollow portion is a circular hole.

[0010] As a further improvement of an embodiment of the present invention, part of the outer circumference of the hollow portion is configured to be circular.

[0011] As a further improvement of one embodiment of the present invention, the beak piece is detachably provided on the first clamp, and the beak piece includes a connecting portion connected to the first clamp, an inclined portion forming a certain angle with the connecting portion, and a pointed beak portion located at the far end of the inclined portion, and the hollow portion is provided on the inclined portion.

[0012] As a further improvement of an embodiment of the present invention, the pointed mouth portion is made of a flexible material.

[0013] As a further improvement of an embodiment of the present invention, a projection width of the inclined portion on the lower plane is greater than a projection width of the connecting portion on the lower plane.

[0014] As a further improvement of an embodiment of the present invention, the side of the connecting portion is curved.

[0015] To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention further provides a medical stapler, the medical stapler comprising an instrument body, a firing handle connected to the instrument body, and a staple cartridge assembly detachably connected to the instrument body, the staple cartridge assembly comprising:

[0016] Nail magazine connector;

[0017] A clamp device located at the distal end of the staple cartridge connector and extending along the longitudinal axis, the clamp device comprising a first clamp and a second clamp that can be opened / closed;

[0018] Wherein: the nail magazine assembly also includes a beak piece arranged at the distal end of the first clamp, the second clamp has an upper side facing the first clamp and a lower side opposite to the upper side, when the first clamp and the second clamp are relatively closed, the lower side defines a lower plane, the lower plane intersects with the beak piece, and the maximum projection width of the beak piece on the lower plane is greater than the maximum projection width of the clamp device on the lower plane.

[0019] Compared with the prior art, the beneficial effect of the present invention is that when the first clamp and the second clamp are relatively closed, the lower side of the second clamp defines a lower plane, the lower plane intersects with the beak, and the maximum projection width of the beak on the lower plane is greater than the maximum projection width of the clamp device on the lower plane. That is to say, in the height direction, the beak exceeds the lowest part of the second clamp, and in the width direction, the width of the beak is greater than the width of the clamp device. For some difficult-to-reach surgical sites, such as blood vessels, the clamp can be placed in the location of the blood vessel through the guidance of the beak, thereby facilitating the placement of the clamp and clamping of the tissue. Furthermore, the beak has a hollow portion, which allows the tissue to have a space to avoid, thereby reducing the damage to the tissue caused by the sharp beak of the beak when the first clamp and the second clamp are closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the main view of the nail magazine assembly;

[0021] Figure 2 yes Figure 1 A right view of the middle nail magazine assembly;

[0022] Figure 3 yes Figure 1 A top view of the middle nail magazine assembly;

[0023] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the middle nail magazine assembly;

[0024] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the middle nail magazine assembly from another direction;

[0025] Figure 6 yes Figure 1 A three-dimensional schematic diagram of the hawk beak in the middle nail magazine assembly;

[0026] Figure 7 yes Figure 6 Front view of the middle hawk beak;

[0027] Figure 8 yes Figure 6 Top view of the middle hawkbill piece;

[0028] Fig. 9 yes Figure 6 Top view of the middle eagle beak. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0030] The words expressing positions and directions described in the present invention are all based on the instrument operator as a reference, the end closer to the operator is the proximal end, and the end farther from the operator is the distal end.

[0031] In various drawings of the present invention, for the convenience of illustration, some sizes of structures or parts are exaggerated relative to other structures or parts, and thus, only the basic structure of the subject matter of the present invention is illustrated.

[0032] As used herein, terms indicating spatial relative positions such as "upper," "above," "lower," and "below" are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the figure is turned over, units described as being "below" or "beneath" other units or features will be located "above" the other units or features. Thus, the exemplary term "below" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0033] In the embodiments of the present invention, the medical stapler of the present invention is specifically explained by taking the laparoscopic surgical cutting stapler as an example, but it should be noted that the technical spirit involved in the following embodiments can be used interchangeably on other forms of staplers.

[0034] A medical stapler is used to apply multiple suture staples to physiological tissues of a human body and to cut the physiological tissues accordingly. An embodiment of the present invention provides a medical stapler, which includes an instrument body (not shown), a firing handle (not shown) connected to the instrument body, and a stapler assembly detachably connected to the instrument body. Specifically, the stapler assembly is connected to the distal end of the instrument body.

[0035] like Figures 1 to 5As shown, the staple cartridge assembly includes a staple cartridge connector, a clamp device 12 located at the distal end of the staple cartridge connector and extending along the longitudinal axis 10, and the clamp device 12 includes a first clamp 14 and a second clamp 16 that can be opened / closed. The staple cartridge assembly also includes a beak 18 located at the distal end of the first clamp 14, and the second clamp 16 has an upper side portion 20 facing the first clamp 14 and a lower side portion 22 opposite to the upper side portion 20. When the first clamp 14 and the second clamp 16 are relatively closed, the lower side portion 22 defines a lower plane P1, and the lower plane P1 intersects with the beak 18, and the maximum projection width of the beak 18 on the lower plane P1 is greater than the maximum projection width of the clamp device 12 on the lower plane P1. In this way, the beak 18 reaches the maximum limit of the circumferential dimension that can enter the surgical device, and the stapler is better guided into the surgical device. The beak 18 can be fixedly disposed at the distal end of the first clamp 14 . Of course, the beak 18 can also be movably disposed at the distal end of the first clamp 14 .

[0036] In the preferred embodiment, when the first jaw 14 and the second jaw 16 are relatively closed, the lower plane P1 intersects with the beak 18, and the maximum projection width of the beak 18 on the lower plane P1 is greater than the maximum projection width of the clamp device 12 on the lower plane P1. That is to say, in the height direction, the beak 18 exceeds the lowest part of the second jaw 16, and in the width direction, the width of the widest part of the beak 18 is greater than the width of the widest part of the clamp device 12. For some difficult-to-reach surgical sites, such as blood vessels, the beak can be guided to place the clamp at the location of the blood vessel, thereby facilitating the placement of the clamp and clamping of tissues.

[0037] Further, a plane perpendicular to the longitudinal axis 10 is defined as a vertical plane P2, and the projection of the clamping device 12 on the vertical plane P2 is completely located within the projection range of the hawk beak 18 on the vertical plane P2. That is, not only in the height direction, the hawk beak 18 is higher than the clamping device 12 composed of the first clamp 14 and the second clamp 16, but also in the width direction, both sides of the hawk beak 18 are wider than the clamping device 12.

[0038] The beak 18 has a hollow portion 24, and when the first jaw 14 and the second jaw 16 are relatively closed, the hollow portion 24 faces the joint position of the first jaw 14 and the second jaw 16. Thus, the hollow portion 24 provides an escape space for the tissue, reducing the pressure damage to the tissue caused by the beak 18 when the first jaw 14 and the second jaw 16 are closed, especially when multiple consecutive anastomoses are required during surgery, the damage caused by the beak 18 to the anastomosed tissue.

[0039] Specifically, the hollow portion 24 is a circular hole. Of course, the hollow portion 24 can also be set in other shapes. In addition, part of the outer periphery of the hollow portion 24 is also set to be circular. Similarly, part of the outer periphery of the hollow portion 24 can also be designed not to be circular, but to be designed in other curved shapes, as long as it can reduce damage to tissues.

[0040] Further references Figures 6 to 9 As shown, in this preferred embodiment, the beak 18 is detachably provided on the first jaw 14, so that the beak 18 can be removed from the first jaw 14. Further, the beak 18 includes a connecting portion 28 connected to the first jaw 14, an inclined portion 30 at a certain angle to the connecting portion 28, and a pointed beak 32 provided at the distal end of the inclined portion 30, and the hollow portion 24 is provided at the inclined portion 30, and the pointed beak 32 is preferably a long flexible member. In some surgeries, when the beak 18 completes the guiding function of the jaws, the doctor can conveniently clamp the distal end of the beak 18 to separate it from the jaws. The angle formed by the inclined portion 30 and the connecting portion 28 is an obtuse angle, and the end of the inclined portion 30 is the pointed beak 32. Preferably, the pointed beak 32 is made of a flexible material to reduce damage to the tissue to be cut or its surrounding tissues.

[0041] In order to further reduce the closing pressure of the first jaw 14 and the second jaw 16, the projection width of the inclined portion 30 on the lower plane P1 is greater than the projection width of the connecting portion 28 on the lower plane P1. Preferably, the side of the connecting portion 28 is curved. In other words, the connecting portion 28 is configured to be shaped like a neck.

[0042] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0043] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A staple cartridge assembly, the staple cartridge assembly comprising a clamp device extending along a longitudinal axis, the clamp device comprising a first clamp and a second clamp that can be opened / closed; Features: The nail magazine assembly also includes a beak piece arranged at the distal end of the first clamp, the second clamp has an upper side facing the first clamp and a lower side opposite to the upper side, when the first clamp and the second clamp are relatively closed, the lower side defines a lower plane, the lower plane intersects with the beak piece, and the maximum projection width of the beak piece on the lower plane is greater than the maximum projection width of the clamp device on the lower plane.

2. The staple cartridge assembly according to claim 1, characterized in that: A plane perpendicular to the longitudinal axis is defined as a vertical plane, and a projection of the clamping device on the vertical plane is completely located within the projection range of the hawk's beak on the vertical plane.

3. The staple cartridge assembly according to claim 1, characterized in that: The beak has a hollow portion, and when the first jaw and the second jaw are relatively closed, the hollow portion faces the engagement position of the first jaw and the second jaw.

4. The staple cartridge assembly according to claim 3, characterized in that: The hollow portion is a circular hole.

5. The staple cartridge assembly according to claim 3, characterized in that: Part of the outer circumference of the hollow portion is configured to be circular.

6. The staple cartridge assembly according to claim 3, characterized in that: The beak piece is detachably arranged on the first clamp, and the beak piece includes a connecting portion connected to the first clamp, an inclined portion forming a certain angle with the connecting portion, and a pointed beak portion located at the far end of the inclined portion, and the hollow portion is arranged on the inclined portion.

7. The staple cartridge assembly according to claim 6, characterized in that: The pointed mouth portion is made of flexible material.

8. The staple cartridge assembly according to claim 7, characterized in that: A projection width of the inclined portion on the lower plane is greater than a projection width of the connecting portion on the lower plane.

9. The staple cartridge assembly according to claim 7, characterized in that: The side edge of the connecting portion is curved.

10. A medical stapler, comprising an instrument body, a firing handle connected to the instrument body, and a staple cartridge assembly detachably connected to the instrument body, wherein the staple cartridge assembly comprises: Nail magazine connector; A clamp device located at the distal end of the staple cartridge connector and extending along the longitudinal axis, the clamp device comprising a first clamp and a second clamp that can be opened / closed; Features: The nail magazine assembly also includes a beak piece arranged at the distal end of the first clamp, the second clamp has an upper side facing the first clamp and a lower side opposite to the upper side, when the first clamp and the second clamp are relatively closed, the lower side defines a lower plane, the lower plane intersects with the beak piece, and the maximum projection width of the beak piece on the lower plane is greater than the maximum projection width of the clamp device on the lower plane.

Images