Surgical forceps

Abstract

To provide a pair of surgical forceps having a configuration in which an operation performance of the pair of surgical forceps can be improved and a rotation angle of an operation part can be easily discriminated.SOLUTION: A pair of surgical forceps 1 includes: a body part 11; a shaft 16 extending forward from the body part 11; an operation part 17 provided in a distal end portion of the shaft 16 and provided such that an open state and a closed state can be selected; handles 12, 13 provided in rear of the body part 11, for operating the open state and the closed state of the operation part 17; a rotary lock member 15 that is provided integrally with the shaft 16 in between the rear of the shaft 16 and the body part 11, and changes an orientation of the operation part 17 by rotating the operation part 17 around an axis A of the shaft 16; and a slide lock member 14 provided so as to be slidable to forward and rearward on an outer surface of the body part 11, so that a part between a position in which the rotary lock member 15 is fixed and a position in which the rotary lock member 15 is rotatable can be selected.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to surgical forceps. [Background technology]

[0002] Prior art documents disclosing surgical forceps include, for example, JP 2021-502855 A (Patent Document 1), JP 6486941 A (Patent Document 2), JP 2022-527801 A (Patent Document 3), and JP 7086606 A (Patent Document 4).

[0003] The surgical forceps disclosed in these prior art documents all employ a mechanism that enables a shaft having an operating part such as a tip blade at its tip to be rotated about its axis relative to a handle. By employing this mechanism, the orientation of the operating part relative to the handle can be changed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2021-502855 [Patent Document 2] Patent No. 6486941 [Patent Document 3] Special Publication No. 2022-527801 [Patent Document 4] Patent No. 7086606 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the surgical forceps disclosed in the above-mentioned prior art documents, it is difficult to determine the degree to which an operating part such as a tip blade has been rotated relative to a handle. In particular, when the operating part is placed inside the body and used under an endoscope, it is even more difficult to determine the rotation angle.

[0006] The present invention has been made to solve the above-mentioned problems, and has an object to provide surgical forceps that improves the operability of the surgical forceps and has a configuration that makes it possible to easily determine the rotation angle of the operating part. [Means for solving the problem]

[0007] [1]: The surgical forceps disclosed herein comprises a main body, a shaft extending forward from the main body, an operating unit provided at the tip of the shaft and selectable between an open state and a closed state, a handle provided at the rear of the main body for operating the operating unit between the open state and the closed state, a rotation lock member provided integrally with the shaft between the rear of the shaft and the main body and rotated around the axis of the shaft to change the orientation of the operating unit, and a slide lock member provided slidably forward and backward on the outer surface of the main body, thereby selectable between a position that fixes the rotation lock member and a position that allows it to rotate.

[0008] [2]: In the surgical forceps described in [1], a mutually engaging concave-convex portion is provided between the rotation lock member and the slide lock member, and when the concave-convex portions are engaged with each other, the rotation lock member is in a fixed position, and when the concave-convex portions are not engaged with each other, the rotation lock member is in an unfixed position, thereby making the rotation lock member rotatable around the axis of the shaft.

[0009] [3]: In the surgical forceps described in [2], in a normal state, the slide lock member is biased by a biasing member provided inside the main body portion so that the concave and convex portions are engaged with each other, and by sliding the slide lock member against the biasing force of the biasing member, a state in which the concave and convex portions are not engaged with each other is selected, making the rotation lock member rotatable around the axis of the shaft.

[0010] [4]: In the surgical forceps described in [3], the rotation lock member is provided on the front side of the main body, the uneven portion of the rotation lock member is provided on the rear side of the rotation lock member, and the uneven portion of the slide lock member is provided on the front side of the slide lock member, and in a normal state, the slide lock member is urged forward by the biasing member to a position where the rotation lock member is fixed, and by sliding the slide lock member rearward against the biasing force of the biasing member, a state in which the uneven portions do not engage with each other is selected.

[0011] [5]: In the surgical forceps described in any one of [1] to [4], the handle, the rotation lock member, and the slide lock member are molded resin products capable of withstanding autoclave sterilization. Effect of the Invention

[0012] According to the surgical forceps disclosed herein, it is possible to provide a surgical forceps having a configuration that improves the operability of the surgical forceps and allows the rotation angle of the operation portion to be easily determined. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a first perspective view of the surgical forceps according to a first embodiment. [Diagram 2] FIG. 2 is a second perspective view of the surgical forceps according to the first embodiment. [Diagram 3] FIG. 2 is a side view of the surgical forceps according to the first embodiment. [Figure 4] FIG. 2 is a first exploded perspective view of the surgical forceps according to the first embodiment. [Diagram 5] FIG. 2 is a second exploded perspective view of the surgical forceps according to the first embodiment. [Figure 6] FIG. 1 is a first diagram showing a state in which the surgical forceps of the first embodiment are used. [Figure 7] FIG. 2 is a second diagram showing the surgical forceps of the first embodiment in use. [Figure 8]FIG. 11 is a side view showing a modified example of the surgical forceps according to the first embodiment. [Figure 9] FIG. 11 is a first perspective view of the surgical forceps according to the second embodiment. [Figure 10] FIG. 11 is a second perspective view of the surgical forceps according to the second embodiment. [Figure 11] FIG. 11 is a side view of the surgical forceps according to the second embodiment. [Figure 12] FIG. 11 is a first diagram showing a state in which the surgical forceps of the second embodiment are used. [Figure 13] FIG. 2 is a second diagram showing the surgical forceps of the second embodiment in use. [Figure 14] FIG. 11 is a side view showing a modified example of the surgical forceps according to the second embodiment. [Figure 15] FIG. 11 is a first perspective view of the surgical forceps according to the third embodiment. [Figure 16] FIG. 13 is a second perspective view of the surgical forceps according to the third embodiment. [Figure 17] FIG. 11 is a side view of the surgical forceps according to the third embodiment. [Figure 18] FIG. 11 is a partially enlarged view of the surgical forceps according to the third embodiment. [Figure 19] FIG. 13 is a first perspective view of the surgical forceps according to the fourth embodiment. [Figure 20] FIG. 13 is a second perspective view of the surgical forceps according to the fourth embodiment. [Figure 21] FIG. 13 is a side view of the surgical forceps according to the fourth embodiment. [Figure 22] FIG. 13 is a partially enlarged view of the surgical forceps according to the fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, each embodiment of a surgical forceps based on the present disclosure will be described with reference to the drawings. In each embodiment described below, when the number, amount, etc. are mentioned, the scope of the present invention is not necessarily limited to the number, amount, etc., unless otherwise specified. It is intended from the beginning that the configurations shown in each embodiment will be used in appropriate combination.

[0015] (Embodiment 1: Surgical forceps 1) The configuration of the surgical forceps 1 of this embodiment will be described below with reference to Fig. 1 to Fig. 5. Fig. 1 and Fig. 2 are first and second perspective views of the surgical forceps 1, Fig. 3 is a side view of the surgical forceps 1, and Fig. 4 and Fig. 5 are first and second exploded perspective views of the surgical forceps 1. Fig. 6 and Fig. 7 are first and second views showing the surgical forceps 1 in use.

[0016] The surgical forceps 1 comprises a main body 11, a shaft 16 extending forward from the main body 11, an operating unit 17 provided at the tip of the shaft 16 and selectable between an open state and a closed state, a first handle 12 and a second handle 13 provided at the rear of the main body 11 and used to operate the operating unit 17 between the open state and the closed state, a rotation lock member 15 provided integrally with the shaft 16 between the rear of the shaft 16 and the main body 11 and rotated around the axis A of the shaft 16 to change the orientation of the operating unit 17, and a slide lock member 14 provided on the outer surface of the main body 11 to be slidable forward and backward, thereby selectable between a position that fixes the rotation lock member 15 and a position that allows it to rotate.

[0017] In the surgical forceps 1 of this embodiment, a tip blade is illustrated as the openable and closable operating part 17, but it is not limited to a tip blade, and for example, a gripping part can also be used. As an example, the length of the shaft 16 of the surgical forceps 1 is about 65 mm, and the outer diameter of the shaft 16 is about 2 mm, but the dimensions are not limited to these.

[0018] As shown in FIG. 3, uneven portions 14a, 14b and uneven portions 15a, 15b that engage with each other are provided between rotation lock member 15 and slide lock member 14. When uneven portions 14a, 14b and uneven portions 15a, 15b are engaged with each other, rotation lock member 15 is in a fixed position, and when uneven portions 14a, 14b and uneven portions 15a, 15b are not engaged with each other (sliding in the S1 direction in the figure), rotation lock member 15 is in an unfixed position, thereby making rotation lock member 15 rotatable around axis A of shaft 16 (in the direction of arrow R in the figure).

[0019] The handle includes a first handle 12 fixed to the main body 11, and a second handle 13 provided rotatably about a shaft support pin P relative to the main body 11.

[0020] A more detailed configuration of the surgical forceps 1 will be described with reference to Figures 4 and 5. The shaft 16 is made of a hollow metal member, and a wire 19 is housed inside. An operating section 17 is connected to the tip of the wire 19, and a configuration is adopted in which the operating section 17 opens when the wire 19 is moved backward, and closes when the wire 19 is moved forward. A ball 19b is provided at the rear end of the wire 19. This ball 19b is fixed in position in a bearing recess 13a provided in the second handle 13, and is supported rotatably around the axis A.

[0021] Cylindrical rotation lock member 15 is fixed integrally to the rear end of shaft 16 and is attached to the front side of main body 11 so as to be rotatable together with shaft 16 about axis A. Wire 19 is arranged so as to pass through the inside of rotation lock member 15. On the rear side of rotation lock member 15, concave and convex portions 15a, 15b are provided alternately around the entire circumference.

[0022] The main body 11 and the first handle 12 are integrally provided. The first handle 12 is provided with a finger hole 12y for inserting a finger. Furthermore, the first handle 12 is provided with a finger placement area 12a on the front side that is recessed backward, and a concave finger hook 12k is provided on the lower side. The upper part of the main body 11 is provided with a semi-cylindrical storage recess 11a. A ring-shaped front locking portion 11e is provided ahead of the storage recess 11a, and a ring-shaped rear locking portion 11f is provided behind it. Furthermore, a pair of shaft support walls 12h for rotatably supporting the second handle 13 is provided behind the rear locking portion 11f.

[0023] The above-mentioned bearing recess 13a is provided above the second handle 13. The second handle 13 also has a finger hole 13y through which a finger can be inserted. The second handle 13 has a shaft hole 13h through which a shaft support pin P for rotation can be inserted. The shaft support pin P is inserted and fixed in a state where the shaft hole 13h is positioned between a pair of shaft support walls 12h, thereby making the second handle 13 rotatable about the shaft support pin P relative to the first handle 12.

[0024] When the first handle 12 is separated from the second handle 13, the wire 19 is pushed forward by the second handle 13, and in this state, the operation unit 17 is in the open state (the state shown in the figure). On the other hand, when the first handle 12 is brought close to the second handle 13, the wire 19 is pulled backward by the second handle 13, and in this state, the operation unit 17 is in the closed state.

[0025] A pin 18 is placed in the receiving recess 11a of the main body 11. The pin 18 includes a large-diameter head 18a, a shaft 18b, a constricted portion 18c, and an engagement portion 18d. The head 18a is located in the rear locking portion 11f, and prevents the pin 18 from moving forward. The shaft 18b is inserted through a guide tube 14t provided in the slide lock member 14, which will be described later, and guides the slide lock member 14 to slide in the front-rear direction. A coil spring 21 is inserted through the shaft 18b and is sandwiched between the rear end of the front locking portion 11e and the front end of the guide tube 14t. The coil spring 21 is stored in a slightly compressed state, so that it always biases the slide lock member 14 rearward. The engaging portion 18d is fixed to an engaging hole 15h (see FIG. 5) provided in the rotation lock member 15 with the front engaging portion 11e protruding forward.

[0026] The slide lock member 14 has a semi-cylindrical shape, and has concave and convex portions 14a, 14b arranged alternately on the front side thereof. A guide tube 14t is provided inside the slide lock member 14 (see FIG. 5). The guide tube 14t is accommodated in the accommodation recess 11a of the main body 11 to guide the sliding of the slide lock member 14 in the front-rear direction.

[0027] In the surgical forceps 1 having the above configuration, the shaft 16, the operating portion 17, and the wire 19 are made of a metal material such as stainless steel, but the first handle 12, the second handle 13, the slide lock member 14, the rotation lock member 15, and the pin 18 may be resin molded products. In particular, since the surgical forceps 1 needs to be sterilized by autoclave sterilization (high-pressure steam sterilization) for each surgery, it is preferable to use a resin material that can withstand high-pressure steam sterilization. For example, a commercially available resin material can be used, such as "Udel PSU" (registered trademark; Solvay). In this way, by using a resin molded product that can withstand autoclave sterilization, the weight of the surgical forceps 1 can be reduced, and fatigue when using the surgical forceps 1 can be reduced.

[0028] 3, in surgical forceps 1 configured as described above, rotation lock member 15 is provided on the front side of main body 11, and uneven portions 14a, 14b of rotation lock member 15 are provided on the rear side of rotation lock member 15. Uneven portions 15a, 15b of slide lock member 14 are provided on the front side of slide lock member 14.

[0029] In the normal state, the slide lock member 14 is biased forward by a coil spring 21 acting as a biasing member, so that the uneven portions 14a, 14b of the slide lock member 14 and the uneven portions 15a, 15b of the rotation lock member 15 mesh with each other, thereby fixing the rotation lock member 15 in a fixed position where rotation is prevented.

[0030] On the other hand, by sliding the slide lock member 14 backward against the biasing force of the coil spring 21, the meshing relationship between the uneven portions 14a, 14b of the slide lock member 14 and the uneven portions 15a, 15b of the rotation lock member 15 is released, and a mutually non-engaged state is selected, allowing rotation (in the direction of arrow R in the figure) of the rotation lock member 15. On the other hand, when the counterforce against the biasing force of the coil spring 21 of the slide lock member 14 is released (when released), the slide lock member 14 returns to the normal state (locked state).

[0031] In order to enable the uneven portions 14a, 14b of the slide lock member 14 and the uneven portions 15a, 15b of the rotation lock member 15 to naturally mesh with each other due to the biasing force of the coil spring 21, it is advisable to provide tapered portions at the tip portions of the uneven portions 14a, 14b of the slide lock member 14 and the uneven portions 15a, 15b of the rotation lock member 15.

[0032] In this embodiment, the concave-convex portions 14a, 14b of the slide lock member 14 are arranged in pairs on a circumference at a pitch of 45 degrees, so that the circumference is divided into eight parts, and the orientation of the operating unit 17 can be changed in eight directions. Note that the number of divisions on the circumference is not limited to eight, and can be set to an appropriate number of divisions.

[0033] (Usage status) The state of use of the surgical forceps 1 will be described with reference to Figures 6 and 7. Figures 6 and 7 are first and second views showing the state of use of the surgical forceps 1.

[0034] 6, if the surgeon's dominant arm is right-handed, he / she holds the first handle 12 and the second handle 13 of the surgical forceps 1 in the palm of his / her right hand, grasps the slide lock member 14 from both sides with his / her thumb and index finger, and slides it backward (in the direction of the arrow S1 in the figure). In this way, with this surgical forceps 1, the slide lock member 14 can be easily moved with only the right hand to release the locked state.

[0035] 7, the rotation lock member 15 is rotated with the left hand (in the direction of the arrow R in the figure) to change the orientation of the operation unit 17 to a desired direction. After that, by releasing the grip of the slide lock member 14 with the right hand, the operation unit 17 automatically returns to the locked state. Preferably, by adding a mark indicating the rotation angle to the rotation lock member 15, the orientation of the operation unit 17 can be accurately confirmed even in a state where the orientation of the operation unit 17 cannot be visually confirmed.

[0036] (Modification) A modified example of the surgical forceps 1 will be described with reference to Fig. 8. Fig. 8 is a side view showing a modified example of the surgical forceps 1. In the surgical forceps 1, the opening and closing of the first handle 12 and the second handle 13 is left to the surgeon's operation, but for example, as shown in Fig. 8, a spring 30 may be placed between the first handle 12 and the second handle 13 as an elastic member.

[0037] By placing spring 30 as an elastic member between first handle 12 and second handle 13, first handle 12 and second handle 13 are always spaced apart, and operation unit 17 is in a closed state when the surgeon grips first handle 12 and second handle 13. When the surgeon releases his / her grip on first handle 12 and second handle 13, the elastic force of spring 30 causes first handle 12 and second handle 13 to move apart, and operation unit 17 is in an open state.

[0038] (Embodiment 2: Surgical forceps 1A) The configuration of surgical forceps 1A of this embodiment will be described below with reference to Fig. 9 to Fig. 13. Fig. 9 and Fig. 10 are first and second perspective views of surgical forceps 1A, Fig. 11 is a side view of surgical forceps 1A, and Fig. 12 and Fig. 13 are first and second views showing a state in which surgical forceps 1A is used.

[0039] The basic configuration of surgical forceps 1A in this embodiment is the same as that of the above-described surgical forceps 1, so only the differences will be described in detail below. The differences are in the structures of slide lock member 14A, rotation lock member 15A, and pin 18. In the above-described surgical forceps 1, uneven portions 14a, 14b are provided on the rear side of rotation lock member 15, and uneven portions 15a, 15b are provided on the front side of slide lock member 14.

[0040] On the other hand, in the surgical forceps 1A of the present embodiment, uneven portions 14a, 14b are provided on the rear side of the slide lock member 14A, and uneven portions 18e, 18f are provided on the large-diameter head portion 18a of the pin 18A. A configuration is adopted in which the uneven portions 14a, 14b of the slide lock member 14A and the uneven portions 18e, 18f of the pin 18A engage with each other.

[0041] As shown in FIG. 11, the rotation lock member 15A is in a fixed position when the uneven portions 14a, 14b of the slide lock member 14A and the uneven portions 18e, 18f of the pin 18A are engaged with each other, and the rotation lock member 15A is in an unfixed position when the uneven portions 14a, 14b of the slide lock member 14A and the uneven portions 18e, 18f of the pin 18A are not engaged with each other (sliding in the S2 direction in the figure), thereby making the rotation lock member 15A rotatable around the axis A of the shaft 16 (in the direction of arrow R in the figure).

[0042] The slide lock member 14A is constantly biased rearward by a coil spring provided inside.

[0043] (Usage status) The state of use of the surgical forceps 1A will be described with reference to Figures 12 and 13. Figures 12 and 13 are first and second views showing the state of use of the surgical forceps 1A.

[0044] 12, if the surgeon's dominant arm is right, he / she holds the first handle 12 and the second handle 13 of the surgical forceps 1A in the palm of his / her right hand, grasps the slide lock member 14A from both sides with his / her thumb and index finger, and slides it forward (in the direction of the arrow S2 in the figure). In this way, with this surgical forceps 1A, the slide lock member 14A can be easily moved with only the right hand to release the locked state.

[0045] 13, the rotation lock member 15A is rotated with the left hand (in the direction of the arrow R in the figure) to change the orientation of the operation unit 17 to a desired direction. After that, by releasing the grip of the slide lock member 14A with the right hand, the operation unit 17 automatically returns to the locked state. Preferably, by adding a mark indicating the rotation angle to the rotation lock member 15A, the orientation of the operation unit 17 can be accurately confirmed even in a state where the orientation of the operation unit 17 cannot be visually confirmed.

[0046] (Modification) A modified example of the surgical forceps 1 will be described with reference to Fig. 14. Fig. 14 is a side view showing a modified example of the surgical forceps 1A. In the surgical forceps 1A, the opening and closing of the first handle 12 and the second handle 13 is left to the surgeon's operation, but for example, as shown in Fig. 14, a spring 30 may be placed between the first handle 12 and the second handle 13 as an elastic member.

[0047] By placing spring 30 as an elastic member between first handle 12 and second handle 13, first handle 12 and second handle 13 are always spaced apart, and operation unit 17 is in a closed state when the surgeon grips first handle 12 and second handle 13. When the surgeon releases his / her grip on first handle 12 and second handle 13, the elastic force of spring 30 causes first handle 12 and second handle 13 to move apart, and operation unit 17 is in an open state.

[0048] (Embodiment 3: Surgical forceps 1B) The configuration of surgical forceps 1B of this embodiment will be described below with reference to Fig. 15 to Fig. 18. Fig. 15 and Fig. 16 are first and second perspective views of surgical forceps 1B, Fig. 17 is a side view of surgical forceps 1B, and Fig. 18 is a partially enlarged view of surgical forceps 1B.

[0049] The basic configuration of surgical forceps 1B in this embodiment is the same as that of surgical forceps 1A described above, so only the differences will be described in detail below. The differences are in the structures of slide lock member 14B, rotation lock member 15B, and pin 18B.

[0050] As clearly shown in FIG. 18, in surgical forceps 1B in this embodiment, uneven portions 14a, 14b are provided on the inner surface at the rear side of slide lock member 14B, and uneven portions 18e, 18f are provided on the outer circumferential surface of large-diameter head portion 18a of pin 18B, so that uneven portions 14a, 14b of slide lock member 14B and uneven portions 18e, 18f of pin 18B engage with each other.

[0051] In the state shown in FIG. 17, the uneven portions 14a, 14b of the slide lock member 14B and the uneven portions 18e, 18f of the pin 18B are engaged with each other, thereby fixing the rotation lock member 15B, and the uneven portions 14a, 14b of the slide lock member 14B and the uneven portions 18e, 18f of the pin 18B are not engaged with each other (sliding in the S2 direction in the figure), thereby fixing the rotation lock member 15B, thereby making the rotation lock member 15B rotatable around the axis A of the shaft 16 (in the direction of arrow R in the figure).

[0052] The slide lock member 14B is constantly biased rearward by a coil spring provided inside.

[0053] The state of use of surgical forceps 1B in this embodiment is similar to the state of use of surgical forceps 1A shown in Figures 12 and 13. Moreover, the modified example is also similar to the modified example of surgical forceps 1A shown in Figure 14, so duplicated explanations will be omitted.

[0054] (Embodiment 4: Surgical forceps 1C) The configuration of surgical forceps 1C of this embodiment will be described below with reference to Fig. 19 to Fig. 22. Fig. 19 and Fig. 20 are first and second perspective views of surgical forceps 1C, Fig. 21 is a side view of surgical forceps 1C, and Fig. 22 is a partially enlarged view of surgical forceps 1C.

[0055] The basic configuration of surgical forceps 1B in this embodiment is the same as that of surgical forceps 1A described above, so only the differences will be described in detail below. The differences are in the structures of slide lock member 14C, rotation lock member 15C, and pin 18C.

[0056] As clearly shown in FIG. 22, in surgical forceps 1C in this embodiment, uneven portions 14a, 14b are provided on the inner surface at the rear side of slide lock member 14C, convex portions 18e extend rearward from large-diameter head portion 18a of pin 18C, and concave portions 18f are provided between adjacent convex portions 18e, so that uneven portions 14a, 14b of slide lock member 14C and uneven portions 18e, 18f of pin 18C engage with each other.

[0057] In the state shown in FIG. 21, the uneven portions 14a, 14b of the slide lock member 14C and the uneven portions 18e, 18f of the pin 18B are engaged with each other, thereby fixing the rotation lock member 15C, and the uneven portions 14a, 14b of the slide lock member 14C and the uneven portions 18e, 18f of the pin 18B are not engaged with each other (sliding in the S2 direction in the figure), thereby fixing the rotation lock member 15C, thereby making the rotation lock member 15C rotatable around the axis A of the shaft 16 (in the direction of arrow R in the figure).

[0058] The slide lock member 14C is constantly biased rearward by a coil spring provided inside.

[0059] The state of use of surgical forceps 1C in this embodiment is similar to the state of use of surgical forceps 1B shown in Figures 12 and 13. In addition, the modified example is also similar to the modified example of surgical forceps 1A shown in Figure 14, so duplicated explanations will be omitted.

[0060] As described above, according to the surgical forceps in each of the embodiments described above, by simply sliding the slide lock member, which is provided on the outer surface of the main body so as to be slidable forward and backward, forward or backward, it is possible to select between a position where the rotation lock member is fixed and a position where it is rotatable, thereby improving the operability of the surgical forceps and making it possible to easily determine the rotation angle of the operating part.

[0061] Furthermore, by using resin molded products that can withstand autoclave sterilization for some of the parts of the surgical forceps, the surgical forceps can be made lighter, making it possible to reduce fatigue when using the surgical forceps. Furthermore, since the rotation angle of the operating part can be changed freely, it is possible to reduce the burden on the patient by shortening the surgical time compared to when surgical forceps with different rotation angles are prepared in advance and surgical forceps are replaced as necessary.

[0062] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0063] 1, 1A surgical forceps, 11 main body, 11a storage recess, 11e front locking portion, 11f rear locking portion, 12 first handle, 12a area, 12h shaft support wall, 12y, 13y finger holes, 13 second handle, 13a bearing recess, 13h shaft hole, 14, 14A, 14B, 14C slide lock member, 14a, 14b, 15a, 15b, 18e, 18f uneven portion, 14t guide tube, 15, 15A, 15B, 15C rotation lock member, 15h engagement hole, 16 shaft, 17 operation portion, 18, 18A, 18B, 18C pin, 18a head portion, 18b shaft portion, 18c neck portion, 18d engagement portion, 19 wire, 19b ball, 21 Coil spring, 30 springs.

Claims

1. A main body portion, A shaft extending forward from the main body portion; an operating unit provided at a tip of the shaft and capable of selecting between an open state and a closed state; a handle provided at the rear of the main body for controlling the operation unit between an open state and a closed state; a rotation lock member that is provided integrally with the shaft between a rear portion of the shaft and the main body portion, and that rotates around an axis of the shaft to change the orientation of the operation unit; a slide lock member that is slidably provided forward and backward on the outer surface of the main body, and is selectable between a position that fixes the rotation lock member and a position that allows the rotation lock member to rotate; Surgical forceps.

2. Between the rotation lock member and the slide lock member, there are provided uneven portions which engage with each other, and when the uneven portions are engaged with each other, the rotation lock member is in a fixed position, and when the uneven portions are not engaged with each other, the rotation lock member is in an unfixed position, thereby making the rotation lock member rotatable around the axis of the shaft.

2. The surgical forceps according to claim 1.

3. In a normal state, the slide lock member is biased by a biasing member provided inside the main body so that the projections and recesses are engaged with each other, By sliding the slide lock member against the biasing force of the biasing member, a state in which the projections and recesses are not engaged with each other is selected, thereby making the rotation lock member rotatable around the axis of the shaft.

3. The surgical forceps according to claim 2.

4. The rotation lock member is provided on a front side of the main body, The uneven portion of the rotation lock member is provided on a rear side of the rotation lock member, The uneven portion of the slide lock member is provided on a front side of the slide lock member, In a normal state, the slide lock member is biased forward by the biasing member to a position where the rotation lock member is fixed, The slide lock member is slid rearward against the biasing force of the biasing member to select a state in which the projections and recesses are not engaged with each other.

4. The surgical forceps according to claim 3.

5. The handle, the rotation lock member, and the slide lock member are resin molded products that can withstand autoclave sterilization. The surgical forceps according to any one of claims 1 to 4.

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