Medical forceps

Abstract

The medical forceps comprise a supporting rod, a forceps head assembly, an operating rod and a transmission mechanism, and the first end of the supporting rod is provided with a connecting part; the forceps head assembly comprises a first forceps head and a second forceps head which are rotationally connected together; the operating rod is connected with the first tong head and the second tong head through the transmission mechanism, and when the operating rod moves relative to the supporting rod in the first moving direction, the operating rod drives the first tong head and the second tong head to synchronously rotate relative to the connecting part through the transmission mechanism. When the operating rod moves relative to the supporting rod in the second moving direction, the operating rod drives the first tong head to rotate relative to the second tong head through the transmission mechanism. According to the embodiment of the utility model, the bending angle of the forceps head assembly relative to the supporting rod is controlled through the operating rod, and the forceps head assembly is controlled to clamp or loosen the to-be-clamped tissues, so that when a surgeon clamps the to-be-clamped tissues at different positions near a surgical incision through the medical forceps, the medical forceps do not need to be replaced, and the surgical process can be simple.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a medical forceps. Background Art

[0002] In the prior art, when a surgeon performs a surgical operation on a patient, it is often necessary to insert the forceps head of a curved medical forceps into the patient's body through the surgical incision of the patient and clamp the tissue near the surgical incision to facilitate the doctor's operation. However, the bending direction of the forceps head of the existing medical forceps is fixed. When the surgeon clamps the tissue at different positions near the surgical incision, it is often necessary to replace the medical forceps with different bending directions, resulting in a more cumbersome surgical process. Summary of the Invention

[0003] An embodiment of the utility model provides a medical forceps, aiming to solve the problem that the bending direction of the forceps head of the existing medical forceps is fixed, and when the surgeon clamps the tissue at different positions near the surgical incision, it is often necessary to replace the medical forceps with different bending directions, resulting in a more cumbersome surgical process.

[0004] An embodiment of the utility model provides a medical forceps, which comprises:

[0005] A support rod, including a first end and a second end opposite to each other, and a connecting portion is provided at the first end of the support rod;

[0006] A forceps head assembly, including a first forceps head and a second forceps head rotatably connected together, and the second forceps head rotates relative to the first forceps head around a first axis; the first forceps head is rotatably connected to the connecting portion, and the first forceps head rotates relative to the connecting portion around the first axis;

[0007] An operating rod, movably connected to the support rod, and the operating rod has a first movement direction and a second movement direction relative to the support rod, and the first movement direction and the second movement direction are not in the same direction;

[0008] A transmission mechanism, the operating rod is respectively connected to the first forceps head and the second forceps head through the transmission mechanism. When the operating rod moves relative to the support rod along the first movement direction, the operating rod drives the first forceps head and the second forceps head to rotate synchronously relative to the connecting portion through the transmission mechanism; when the operating rod moves relative to the support rod along the second movement direction, the operating rod drives the first forceps head to rotate relative to the second forceps head through the transmission mechanism.

[0009] In some embodiments, the operating rod extends along the length direction of the support rod; the operating rod is rotatably connected to the support rod so that the operating rod has a first movement direction relative to the support rod, and the operating rod rotates around a second axis relative to the operating rod;

[0010] The operating rod is slidably connected to the support rod along the length direction of the support rod, so that the operating rod has a second moving direction relative to the support rod.

[0011] In some embodiments, a first limiting portion is provided on the connecting portion, and the first limiting portion is used to abut against the first jaw to limit the moving distance of the first jaw on the first axis;

[0012] A second limiting portion is provided on the first jaw, and the second limiting portion is used to abut against the second jaw to limit the moving distance of the second jaw on the first axis;

[0013] The transmission mechanism includes a driving rod and a transmission structure. The driving rod is slidably connected to the first jaw along the first axis. A third limiting portion is provided on the driving rod, and the third limiting portion is used to abut against the first jaw to limit the rotation angle of the first jaw relative to the driving rod; the driving rod is slidably connected and rotationally connected to the second jaw. The sliding direction of the driving rod relative to the second jaw extends along the first axis, and the second jaw rotates around the first axis relative to the driving rod; a guide rail is provided on the outer peripheral surface of the driving rod corresponding to the second jaw, and the guide rail spirally extends along the first axis. The second jaw is provided with a guiding portion that slidably cooperates with the guide rail;

[0014] When the operating rod moves relative to the support rod along the first moving direction, the operating rod drives the driving rod to rotate relative to the connecting portion through the transmission structure, so as to drive the first jaw and the second jaw to rotate synchronously relative to the connecting portion; when the operating rod moves relative to the support rod along the second moving direction, the operating rod drives the driving rod to slide relative to the first jaw through the transmission structure, so as to drive the first jaw to rotate relative to the second jaw.

[0015] In some embodiments, the transmission structure includes a first bevel gear and a second bevel gear that mesh with each other. The first bevel gear is slidably connected to the operating rod along the length direction of the operating rod. A fourth limiting portion is provided on the operating rod, and the fourth limiting portion is used to abut against the first bevel gear to limit the rotation angle of the first bevel gear around the operating rod; the second bevel gear is slidably connected to the driving rod along the length direction of the driving rod. A fifth limiting portion is provided on the driving rod, and the fifth limiting portion is used to abut against the second bevel gear to limit the rotation angle of the second bevel gear around the driving rod;

[0016] The transmission structure further includes an elastic member and a pushing portion provided at one end of the operating rod close to the connecting portion. When the operating rod moves in the direction from the second end to the first end of the support rod, the pushing portion is used to abut against one end of the driving rod close to the operating rod, so as to push the driving rod to slide relative to the first jaw head in the direction from the connecting portion to the first jaw head; one end of the elastic member is connected to the connecting portion, and the other end of the elastic member is connected to the driving rod, so as to apply an elastic force to the driving rod to make the driving rod slide towards the operating rod.

[0017] In some embodiments, the connecting portion has a receiving cavity, and the first bevel gear and the second bevel gear are received in the receiving cavity.

[0018] In some embodiments, a receiving groove is formed in the inner wall of the receiving cavity close to the jaw head assembly. The driving rod passes through the bottom surface of the receiving groove and is slidably connected to the first jaw head, and is slidably connected and rotatably connected to the second jaw head;

[0019] A butting portion is convexly provided on the outer peripheral surface of the driving rod, and the butting portion is disposed opposite to the bottom surface of the receiving groove; the elastic member is located between the bottom surface of the receiving groove and the butting portion, one end of the elastic member abuts against the bottom surface of the receiving groove, and the other end of the elastic member abuts against the butting portion; the elastic member is a spring; the elastic member is sleeved on the driving rod.

[0020] In some embodiments, the butting portion is slidably connected and rotatably connected to the inner side surface of the receiving groove, and the butting portion slides in the receiving groove along the first axis; the butting portion rotates around the first axis in the receiving groove.

[0021] In some embodiments, the support rod is of a sleeve structure, the support rod is sleeved on the operating rod, and one end of the operating rod away from the connecting portion extends out of the support rod; an adjusting knob is provided at one end of the operating rod away from the connecting portion.

[0022] In some embodiments, a first hinged protrusion is convexly provided on the connecting portion, a first hinged hole is formed in the first jaw head, and the first hinged protrusion is inserted into the first hinged hole to enable the connecting portion to be rotatably connected to the first jaw head; a first limiting protrusion is convexly provided on the outer peripheral surface of the first hinged protrusion, and a first limiting groove is formed at a position corresponding to the first limiting protrusion on the inner surface of the first hinged hole. The first limiting groove extends along the circumferential direction of the first hinged hole, and the first limiting protrusion is slidably mounted in the first limiting groove along the circumferential direction of the first hinged hole to limit the moving distance of the first jaw head relative to the connecting portion on the first axis;

[0023] The first pliers head includes a first pliers head body and a first hinged portion, the first hinged portion includes a first sub-hinge portion and a second sub-hinge portion which are separately arranged, the first sub-hinge portion and the second sub-hinge portion enclose the first hinged portion to form the first hinged hole, and the second sub-hinge portion is connected to the first pliers head body at a side away from the first sub-hinge portion.

[0024] In some embodiments, a second hinge protrusion is convexly provided on a side of the first clamp head away from the connecting portion, and a second hinge hole is provided on the second clamp head, and the second hinge protrusion is inserted into the second hinge hole so that the second clamp head is rotatably connected to the first clamp head; a second limiting protrusion is convexly provided on the outer circumferential surface of the second hinge protrusion, and a second limiting groove is provided on the inner surface of the second hinge hole at a position corresponding to the second limiting protrusion, and the second limiting groove extends along the circumference of the second hinge hole, and the second limiting protrusion is slidably installed in the second limiting groove along the circumference of the second hinge hole to limit the moving distance of the second clamp head relative to the connecting portion on the first axis;

[0025] The second pliers head includes a second pliers head body and a second hinged portion, the second hinged portion includes a third sub-hinge portion and a fourth sub-hinge portion which are separately arranged, the third sub-hinge portion and the fourth sub-hinge portion enclose the second hinged hole, and the third sub-hinge portion is connected to the second pliers head body on one side away from the fourth sub-hinge portion.

[0026] The operating rod of the medical forceps provided by the embodiment of the utility model is connected to the first forceps head and the second forceps head respectively through a transmission mechanism, and the operating rod has a first movable direction and a second movable direction relative to the support rod. When the operating rod moves along the first movable direction relative to the support rod, the operating rod drives the first forceps head and the second forceps head to rotate synchronously relative to the connecting part through the transmission mechanism to adjust the bending angle of the forceps head assembly; when the operating rod moves along the second movable direction relative to the support rod, the operating rod drives the first forceps head to rotate relative to the second forceps head through the transmission mechanism, so that the first forceps head and the second forceps head of the forceps head assembly clamp or release the tissue to be clamped.

[0027] It can be seen that the medical forceps provided in the embodiment of the utility model can control the bending angle of the forceps head assembly relative to the support rod through the operating rod, and control the clamping and loosening of the first forceps head and the second forceps head of the forceps head assembly. When the surgeon clamps tissues at different positions near the surgical port with the medical forceps, there is no need to replace the medical forceps, which can simplify the surgical procedure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0029] Figure 1 Schematic structural diagram of an embodiment of the medical forceps provided by an embodiment of the present utility model;

[0030] Figure 2 is Figure 1 Schematic structural diagram after the forceps head assembly of the medical forceps in [Figure] rotates a certain angle relative to the support rod;

[0031] Figure 3 Exploded structural diagram of an embodiment of the medical forceps provided by an embodiment of the present utility model;

[0032] Figure 4 is Figure 3 Enlarged view of part A in [Figure];

[0033] Figure 5 Cross-sectional view of an embodiment of the medical forceps provided by an embodiment of the present utility model, which is sectioned along the axial direction of the operating rod;

[0034] Figure 6 is Figure 5 Enlarged view of part B in [Figure].

[0035] Medical forceps 100; Support rod 110; Sub-rod 111; Connection part 112; Sub-connection part 1121; Accommodation cavity 113; Accommodation groove 114; First hinge projection 115; First limiting part 116; Forceps head assembly 120; First forceps head 121; First hinge hole 1210; First limiting groove 1211; First forceps head body 1212; First hinge part 1213; First sub-hinge part 12131; Second sub-hinge part 12132; Second hinge projection 1214; Second limiting part 12141; Third limiting groove 1215; Second forceps head 122; Guide part 1221; Second hinge hole 1222; Second limiting groove 1223; Second forceps head body 1224; Second hinge part 1225; Third sub-hinge part 12251; Fourth sub-hinge part 12252; Operating rod 130; Adjusting knob 131; Pushing part 132; Fourth limiting part 133; Transmission mechanism 140; Driving rod 141; Guide rail 1411; Abutting part 1412; Third limiting part 1413; Fifth limiting part 1414; Transmission structure 142; First bevel gear 1421; Second bevel gear 1422; Elastic member 1423. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically and clearly defined.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0040] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. 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. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0041] An embodiment of the present utility model provides a medical forceps. The following will be described in detail respectively.

[0042] As Figure 1 、 Figure 4 and Figure 6 shown, the medical forceps 100 includes a support rod 110, a forceps head assembly 120, an operating rod 130, and a transmission mechanism 140. Among them, the support rod 110 includes opposite first and second ends, and a connecting portion 112 is provided at the first end of the support rod 110. The forceps head assembly 120 includes a first forceps head 121 and a second forceps head 122 that are rotatably connected together. By rotating the first forceps head 121 relative to the second forceps head 122, the first forceps head 121 and the second forceps head 122 of the forceps head assembly 120 can rotate towards each other, the included angle formed by the first forceps head 121 and the second forceps head 122 decreases, so that the first forceps head 121 and the second forceps head 122 of the forceps head assembly 120 clamp the tissue to be clamped. Or, the first forceps head 121 and the second forceps head 122 of the forceps head assembly 120 can also rotate away from each other, the included angle formed by the first forceps head 121 and the second forceps head 122 increases, so that the first forceps head 121 and the second forceps head 122 of the forceps head assembly 120 release the tissue to be clamped.

[0043] The first forceps head 121 of the forceps head assembly 120 is rotatably connected to the connecting portion 112, and the rotation axis of the first forceps head 121 relative to the connecting portion 112 is the same as the rotation axis of the second forceps head 122 relative to the first forceps head 121. Thus, the first forceps head 121 and the second forceps head 122 of the forceps head assembly 120 can rotate together relative to the connecting portion 112 to adjust the bending angle of the forceps head assembly 120 relative to the support rod 110.

[0044] As Figure 5 and Figure 6As shown, the operating rod 130 is movably connected to the support rod 110. The operating rod 130 is respectively connected to the first jaw 121 and the second jaw 122 through a transmission mechanism 140. The operating rod 130 moves relative to the support rod 110 to drive the entire jaw assembly 120 to rotate relative to the connecting portion 112 through the transmission mechanism 140. In addition, the second jaw 122 of the jaw assembly 120 is driven to rotate relative to the first jaw 121 through the transmission mechanism 140, so that the first jaw 121 and the second jaw 122 of the jaw assembly 120 clamp or release the tissue to be clamped.

[0045] Wherein, the operating rod 130 has a first movement direction and a second movement direction relative to the support rod 110, and the first movement direction and the second movement direction are not in the same direction. When the operating rod 130 moves relative to the support rod 110 along the first movement direction, the operating rod 130 drives the first jaw 121 and the second jaw 122 to rotate synchronously relative to the connecting portion 112 through the transmission mechanism 140. When the operating rod 130 moves relative to the support rod 110 along the second movement direction, the operating rod 130 drives the first jaw 121 to rotate relative to the second jaw 122 through the transmission mechanism 140.

[0046] The operating rod 130 of the medical forceps 100 provided in the embodiment of the present invention is respectively connected to the first jaw 121 and the second jaw 122 through the transmission mechanism 140, and the operating rod 130 has a first movement direction and a second movement direction relative to the support rod 110. When the operating rod 130 moves relative to the support rod 110 along the first movement direction, the operating rod 130 drives the first jaw 121 and the second jaw 122 to rotate synchronously relative to the connecting portion 112 through the transmission mechanism 140 to adjust the bending angle of the jaw assembly 120 relative to the support rod 110. When the operating rod 130 moves relative to the support rod 110 along the second movement direction, the operating rod 130 drives the first jaw 121 to rotate relative to the second jaw 122 through the transmission mechanism 140, so that the first jaw 121 and the second jaw 122 of the jaw assembly 120 clamp or release the tissue to be clamped.

[0047] After the surgical staff inserts the jaw assembly 120 of the medical forceps 100 into the patient's body through the surgical incision, the operating rod 130 can be controlled to move relative to the support rod 110 along the first movement direction, so as to drive the entire jaw assembly 120 to rotate relative to the connecting portion 112 through the transmission mechanism 140 to a position corresponding to the tissue to be clamped, so that the tissue to be clamped is located between the first jaw 121 and the second jaw 122 of the jaw assembly 120.

[0048] Then, by controlling the operating rod 130 to move relative to the support rod 110 along the second movement direction, the first jaw 121 and the second jaw 122 are driven to rotate towards each other through the transmission mechanism 140 (for example, from Figure 1 the position of the jaw assembly 120 in the middle to Figure 2the position of the middle jaw assembly 120) so that the first jaw 121 and the second jaw 122 of the jaw assembly 120 clamp the tissue to be clamped.

[0049] When it is necessary to clamp the second tissue to be clamped by the medical forceps 100, the operating rod 130 can be controlled to drive the first jaw 121 and the second jaw 122 to rotate away from each other through the transmission mechanism 140, so that the first jaw 121 and the second jaw 122 of the jaw assembly 120 release the first tissue to be clamped. Then, the operating rod 130 is controlled to drive the entire jaw assembly 120 to rotate relative to the connecting portion 112 through the transmission mechanism 140 to a position corresponding to the second tissue to be clamped, so that the second tissue to be clamped is located between the first jaw 121 and the second jaw 122 of the jaw assembly 120. After that, the operating rod 130 is further controlled to drive the first jaw 121 and the second jaw 122 to rotate towards each other through the transmission mechanism 140, so that the first jaw 121 and the second jaw 122 of the jaw assembly 120 clamp the second tissue to be clamped.

[0050] It can be seen that the medical forceps 100 provided by the embodiment of the present invention can control the bending angle of the jaw assembly 120 relative to the support rod 110 through the operating rod 130, and control the first jaw 121 and the second jaw 122 of the jaw assembly 120 to clamp or release the tissue to be clamped. When the surgeon clamps the tissues to be clamped at different positions near the surgical incision through the medical forceps 100, only the bending angle of the jaw assembly 120 relative to the support rod 110 needs to be adjusted, and there is no need to replace the medical forceps 100, which can simplify the surgical process.

[0051] In some embodiments, such as Figure 3 and Figure 5 shown, the operating rod 130 extends along the length direction of the support rod 110. Specifically, the operating rod 130 is parallel to the support rod 110. Of course, the operating rod 130 can also form a small angle of 1°, 3°, etc. with the support rod 110. The operating rod 130 is rotatably connected to the support rod 110 so that the operating rod 130 has a first movement direction relative to the support rod 110, and the rotation axis of the operating rod 130 extends along the length direction of the support rod 110. In addition, the operating rod 130 is slidably connected to the support rod 110 along the length direction of the support rod 110 so that the operating rod 130 has a second movement direction relative to the support rod 110.

[0052] Thus, by controlling the rotation of the operating rod 130 relative to the support rod 110 (moving along the first moving direction), the operating rod 130 can drive the entire jaw assembly 120 to rotate relative to the support rod 110 through the transmission mechanism 140. By controlling the movement of the operating rod 130 relative to the support rod 110 along the length direction of the support rod 110 (moving along the second moving direction), the operating rod 130 can drive the second jaw 122 of the jaw assembly 120 to rotate relative to the first jaw 121 through the transmission mechanism 140, so that the first jaw 121 and the second jaw 122 of the jaw assembly 120 clamp or release the tissue to be clamped, and the operation is very convenient.

[0053] In some embodiments, as Figure 4 and Figure 6 shown, a first limiting portion 116 is provided on the connecting portion 112, and the first limiting portion 116 is used to abut against the first jaw 121 to limit the moving distance of the first jaw 121 on the rotation axis of the first jaw 121 relative to the connecting portion 112. A second limiting portion 12141 is provided on the first jaw 121, and the second limiting portion 12141 is used to abut against the second jaw 122 to limit the moving distance of the second jaw 122 on the rotation axis of the first jaw 121 relative to the connecting portion 112.

[0054] The transmission mechanism 140 includes a driving rod 141 and a transmission structure 142. The driving rod 141 is slidably connected to the first jaw 121 along a first axis. A third limiting portion 1413 is provided on the driving rod 141, and the third limiting portion 1413 is used to abut against the first jaw 121 to limit the rotation angle of the first jaw 121 relative to the driving rod 141. Therefore, when the driving rod 141 rotates relative to the connecting portion 112, it will drive the first jaw 121 to rotate relative to the connecting portion 112 together. When the driving rod 141 slides relative to the connecting portion 112, the position of the first jaw 121 relative to the connecting portion 112 remains unchanged.

[0055] The driving rod 141 is slidably and rotatably connected to the second jaw 122. Among them, the sliding direction of the driving rod 141 relative to the second jaw 122 extends along the first axis, and the second jaw 122 rotates around the first axis relative to the driving rod 141. A guide rail 1411 is provided on the outer peripheral surface of the driving rod 141 corresponding to the second jaw 122, and the guide rail 1411 spirally extends along the first axis. The second jaw 122 is provided with a guide portion 1221 that slidably cooperates with the guide rail 1411.

[0056] When the driving rod 141 slides relative to the first jaw 121 along the first axis at the same time, the position of the first jaw 121 relative to the connecting portion 112 remains unchanged, while the second jaw 122 can rotate relative to the driving rod 141 under the cooperation of the guide rail 1411 on the driving rod 141 and the guiding portion 1221 on the second jaw 122, so as to realize the rotation of the second jaw 122 relative to the first jaw 121, so that the first jaw 121 and the second jaw 122 clamp or loosen the tissue to be clamped.

[0057] When the operating rod 130 drives the driving rod 141 to rotate relative to the connecting portion 112 through the transmission structure 142, it can drive the first jaw 121 and the second jaw 122 to rotate synchronously relative to the connecting portion 112, that is, drive the whole jaw assembly 120 to rotate relative to the connecting portion 112.

[0058] Specifically, a first hinge protrusion 115 protrudes from the connecting portion 112 of the support rod 110, and a first hinge hole 1210 is formed in the first jaw 121. The first hinge protrusion 115 is inserted into the first hinge hole 1210 to rotatably connect the connecting portion 112 with the first jaw 121.

[0059] Wherein, a first limiting protrusion is protruded on the outer peripheral surface of the first hinge protrusion 115 to form a first limiting portion 116. A first limiting groove 1211 is formed at a position corresponding to the first limiting protrusion on the inner surface of the first hinge hole 1210. The first limiting groove 1211 extends along the axial direction of the first hinge hole 1210, and the first limiting protrusion is slidably installed in the first limiting groove 1211 along the circumferential direction of the first hinge hole 1210 to limit the moving distance of the first jaw 121 relative to the connecting portion 112 on the first axis.

[0060] Thus, when the driving rod 141 slides relative to the first jaw 121, the position of the first jaw 121 relative to the connecting portion 112 remains unchanged and will not move in the same direction as the driving rod 141. While the second jaw 122 will rotate around the driving rod 141, that is, make the second jaw 122 rotate relative to the first jaw 121, so that the first jaw 121 and the second jaw 122 clamp or loosen.

[0061] Of course, a groove extending along the circumferential direction of the first hinge protrusion 115 can also be formed on the outer peripheral surface of the first hinge protrusion 115 to form a first limiting portion 116, and a protruding structure is protruded on the inner peripheral surface of the first hinge hole 1210, and the protruding structure is slidably installed in the groove on the outer peripheral surface of the first hinge protrusion 115 along the circumferential direction of the first hinge protrusion 115 to limit the moving distance of the first jaw 121 relative to the connecting portion 112 on the first axis.

[0062] Among them, the first clamping head 121 includes a first clamping head body 1212 and a first hinge portion 1213. The first hinge portion 1213 is rotatably connected to the connecting portion 112, so that the first clamping head 121 is rotatably connected to the connecting portion 112. The first hinge portion 1213 includes a separately arranged first sub-hinge portion 12131 and a second sub-hinge portion 12132. The first sub-hinge portion 12131 and the second sub-hinge portion 12132 enclose a first hinge hole 1210. The side of the second sub-hinge portion 12132 away from the first sub-hinge portion 12131 is connected to the first clamping head body 1212.

[0063] Thus, the first sub-hinge portion 12131 and the second sub-hinge portion 12132 can be first arranged on the radial two sides of the first hinge protrusion 115 of the connecting portion 112, so that the first hinge protrusion 115 is located in the first hinge hole 1210 enclosed by the first sub-hinge portion 12131 and the second sub-hinge portion 12132, and the first limiting protrusion on the first hinge protrusion 115 is slidably mounted in the first limiting groove 1211 along the circumferential direction of the first hinge hole 1210. Then, the first sub-hinge portion 12131 and the second sub-hinge portion 12132 are fixedly connected together by means of buckling, welding, pasting, etc., so that the first clamping head 121 can be more conveniently assembled with the connecting portion 112 of the support rod 110.

[0064] Continue to refer to Figure 4 and Figure 6 , a third limiting protrusion is convexly provided on the outer peripheral surface of the driving rod 141 to form a third limiting portion 1413. A third limiting groove 1215 extending along the first axis is opened on the inner peripheral surface of the first hinge hole 1210. The third limiting protrusion is slidably mounted in the third limiting groove 1215 along the first axis, so that the driving rod 141 can slide relative to the first clamping head 121 along the first axis. When the driving rod 141 rotates relative to the connecting portion 112, the first clamping head 121 will be driven to rotate together through the third limiting portion 1413.

[0065] Of course, the third limiting groove 1215 can also be opened on the outer peripheral surface of the driving rod 141, and the first limiting protrusion can be convexly provided on the inner peripheral surface of the first hinge hole 1210. Similarly, it can be realized that the driving rod 141 can slide relative to the first clamping head 121 along the first axis, and when the driving rod 141 rotates relative to the connecting portion 112, the first clamping head 121 will be driven to rotate together through the third limiting portion 1413.

[0066] On one side of the first jaw 121 facing away from the connection part 112, a second hinge protrusion 1214 protrudes. The second jaw 122 is provided with a second hinge hole 1222. The second hinge protrusion 1214 is inserted into the second hinge hole 1222 so that the second jaw 122 is rotatably connected to the first jaw 121. Among them, on the outer peripheral surface of the second hinge protrusion 1214, a second limit protrusion protrudes to form a second limit part 12141. At a position corresponding to the second limit protrusion on the inner surface of the second hinge hole 1222, a second limit groove 1223 is provided. The second limit groove 1223 extends along the circumferential direction of the second hinge hole 1222. The second limit protrusion is slidably installed in the second limit groove 1223 along the circumferential direction of the second hinge hole 1222 to limit the moving distance of the second jaw 122 relative to the connection part 112 on the rotation axis of the second jaw 122 relative to the connection part 112.

[0067] Since the movement of the second jaw 122 relative to the first jaw 121 on the first axis is restricted, when the driving rod 141 slides relative to the first jaw 121, the driving rod 141 can more stably drive the second jaw 122 to rotate around the driving rod 141, so that the second jaw 122 rotates relative to the first jaw 121, so that the second jaw 122 and the first jaw 121 are clamped or loosened.

[0068] Certainly, a groove extending along the circumferential direction of the second hinge protrusion 1214 can also be provided on the outer peripheral surface of the second hinge protrusion 1214 to form a second limit part 12141, and a protruding structure can be protruded on the inner peripheral surface of the second hinge hole 1222, and the protruding structure can be slidably installed in the groove on the outer peripheral surface of the second hinge protrusion 1214 along the circumferential direction of the second hinge protrusion 1214 to limit the moving distance of the second jaw 122 relative to the first jaw 121 on the first axis.

[0069] Among them, the second jaw 122 includes a second jaw body 1224 and a second hinge part 1225. The second hinge part 1225 includes a third sub-hinge part 12251 and a fourth sub-hinge part 12252 which are separately arranged. The third sub-hinge part 12251 and the fourth sub-hinge part 12252 enclose to form a second hinge hole 1222. One side of the third sub-hinge part 12251 away from the fourth sub-hinge part 12252 is connected to the second jaw body 1224.

[0070] Thus, the third sub-hinged portion 12251 and the fourth sub-hinged portion 12252 can be first disposed on the radial two sides of the second hinge projection 1214, such that the second hinge projection 1214 is located within the second hinge hole 1222 formed by enclosing the third sub-hinged portion 12251 and the fourth sub-hinged portion 12252, and the second limiting projection on the second hinge projection 1214 is slidably mounted within the second limiting groove 1223 along the circumferential direction of the second hinge hole 1222. Then, the third sub-hinged portion 12251 and the fourth sub-hinged portion 12252 are fixedly connected together by means of snap-fastening, welding, pasting, etc., so as to make the assembly of the second jaw 122 and the first jaw 121 more convenient.

[0071] In some embodiments, as Figure 4 and Figure 6 shown, the transmission structure 142 includes a first bevel gear 1421 and a second bevel gear 1422 that mesh with each other. The first bevel gear 1421 is slidably connected to the operating rod 130 along the length direction of the operating rod 130. A fourth limiting portion 133 is provided on the operating rod 130, and this fourth limiting portion 133 is used to abut against the first bevel gear 1421 to limit the rotation angle of the first bevel gear 1421 around the operating rod 130. The second bevel gear 1422 is slidably connected to the driving rod 141 along the length direction of the driving rod 141. A fifth limiting portion 1414 is provided on the driving rod 141, and this fifth limiting portion 1414 is used to abut against the second bevel gear 1422 to limit the rotation angle of the second bevel gear 1422 around the driving rod 141. Thus, when controlling the operating rod 130 to rotate relative to the support rod 110, the first bevel gear 1421 can drive the second bevel gear 1422 to rotate, and further drive the driving rod 141 to rotate relative to the connecting portion 112 through the second bevel gear 1422, so that the driving rod 141 drives the entire jaw assembly 120 to rotate relative to the connecting portion 112.

[0072] In addition, the transmission structure 142 further includes an elastic member 1423 and a pushing portion 132 provided at one end of the operating rod 130 close to the connecting portion 112. When the operating rod 130 moves along the direction from the second end to the first end of the support rod 110, the pushing portion 132 is used to abut against one end of the driving rod 141 close to the operating rod 130 to push the driving rod 141 to slide relative to the first jaw 121 along the direction from the connecting portion 112 to the first jaw 121, and further drive the second jaw 122 to rotate relative to the first jaw 121 by the driving rod 141, so as to reduce (or increase) the included angle formed by the first jaw 121 and the second jaw 122.

[0073] One end of the elastic member 1423 is connected to the connecting portion 112, and the other end of the elastic member 1423 is connected to the driving rod 141 to apply an elastic force to the driving rod 141 to cause the driving rod 141 to slide in the direction from the first jaw 121 to the connecting portion 112. Thus, when the operating rod 130 is released, the acting force applied by the elastic member 1423 to the driving rod 141 will cause the driving rod 141 to slide relative to the first jaw 121 in the direction from the first jaw 121 to the connecting portion 112, so as to increase (or decrease) the included angle formed by the first jaw 121 and the second jaw 122. At the same time, one end of the driving rod 141 close to the operating rod 130 will also apply an acting force to the operating rod 130 through the pushing portion 132, causing the operating rod 130 to move in the direction from the first end to the second end of the support rod 110.

[0074] Wherein, the diameter of the pushing portion 132 gradually increases in the direction from the first end to the second end of the support rod 110, so that the outer peripheral surface of the pushing portion 132 is an inclined surface. When the operating rod 130 moves in the direction from the second end to the first end of the support rod 110, the outer peripheral surface of the pushing portion 132 abuts against one end of the driving rod 141 close to the operating rod 130 to push the driving rod 141 to slide relative to the first jaw 121 in the direction from the connecting portion 112 to the first jaw 121.

[0075] In addition, the outer peripheral surface of one end of the driving rod 141 close to the operating rod 130 can be set as a conical surface. When the operating rod 130 moves in the direction from the second end to the first end of the support rod 110, the pushing portion 132 is used to abut against the conical surface of one end of the driving rod 141 close to the operating rod 130 to push the driving rod 141 to slide relative to the first jaw 121 in the direction from the connecting portion 112 to the first jaw 121.

[0076] In the embodiment of the present utility model, the structures of the fourth limiting portion 133 and the fifth limiting portion 1414 can refer to the structure of the above-mentioned third limiting portion 1413, which will not be elaborated here.

[0077] As Figure 4 and Figure 6 shown, the connecting portion 112 has a receiving cavity 113, and the first bevel gear 1421 and the second bevel gear 1422 are received in the receiving cavity 113. Thus, the first bevel gear 1421 and the second bevel gear 1422 can be isolated from the tissues in the patient's body through the connecting portion 112, avoiding harm to the patient when the first bevel gear 1421 and the second bevel gear 1422 rotate.

[0078] As Figure 4 and Figure 6As shown, on the inner wall of the receiving cavity 113 of the connecting portion 112 close to the jaw assembly 120, a receiving groove 114 is provided. The driving rod 141 passes through the bottom surface of the receiving groove 114 and is slidably connected to the first jaw 121, and is also slidably and rotatably connected to the second jaw 122. A butting portion 1412 is convexly provided on the outer peripheral surface of the driving rod 141, and the butting portion 1412 is disposed opposite to the bottom surface of the receiving groove 114. The elastic member 1423 is located between the bottom surface of the receiving groove 114 and the butting portion 1412. One end of the elastic member 1423 abuts against the bottom surface of the receiving groove 114, and the other end of the elastic member 1423 abuts against the butting portion 1412, so that the elastic member 1423 applies a thrust force to the driving rod 141 through the butting portion 1412 to make the driving rod 141 slide towards the operating rod 130.

[0079] Among them, the elastic member 1423 is sleeved on the driving rod 141, so that the position of the elastic member 1423 is more stable and can apply an elastic force to the driving rod 141 more stably. The elastic member 1423 includes any component such as a spring, rubber, torsion spring, etc. that can apply an elastic force to the driving rod 141 and make the driving rod 141 slide towards the operating rod 130.

[0080] In some embodiments, the butting portion 1412 is slidably and rotatably connected to the inner side surface of the receiving groove 114. Among them, the butting portion 1412 slides along the first axis in the receiving groove 114, and the butting portion 1412 rotates around the first axis in the receiving groove 114, so that the driving rod 141 can drive the jaw assembly 120 to rotate relative to the connecting portion 112 more stably, and drive the second jaw 122 to rotate relative to the first jaw 121 more stably.

[0081] In some embodiments, as Figure 3 and Figure 5 shown, the support rod 110 is of a sleeve structure. The support rod 110 is sleeved on the operating rod 130 to make the connection between the support rod 110 and the operating rod 130 more stable. One end of the operating rod 130 away from the connecting portion 112 extends out of the support rod 110, so as to facilitate controlling the sliding and rotation of the operating rod 130 relative to the support rod 110 through the end of the operating rod 130 away from the connecting portion 112. Preferably, an adjustment knob 131 is provided at the end of the operating rod 130 away from the connecting portion 112. The surgical staff can more conveniently control the rotation and sliding of the operating rod 130 relative to the support rod 110 through the adjustment knob 131.

[0082] Among them, the support rod 110 includes two sub-rods 111 that are separately arranged. The two sub-rods 111 are distributed on the radial two sides of the operating rod 130. The two sub-rods 111 are connected together by means of welding, pasting, buckling, etc. to form the support rod 110. The connecting portion 112 includes two sub-connecting portions 1121. The two sub-connecting portions 1121 are respectively connected to the two sub-rods 111. The sub-connecting portions 1121 are distributed on the two sides of the transmission structure 142. The two sub-connecting portions 1121 are connected together by means of welding, pasting, buckling, etc. to form the connecting portion 112. Thus, the assembly of the support rod 110 and the operating rod 130 can be made more convenient.

[0083] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0084] The above has introduced in detail a medical forceps provided by an embodiment of the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medical forceps, characterized in that: The medical forceps comprises: A support rod, comprising a first end and a second end opposite to each other, wherein the first end of the support rod is provided with a connecting portion; The clamp head assembly comprises a first clamp head and a second clamp head which are rotatably connected together, wherein the second clamp head rotates relative to the first clamp head around a first axis; the first clamp head is rotatably connected to the connecting portion, and the first clamp head rotates relative to the connecting portion around the first axis; An operating rod is movably connected to the support rod, and the operating rod has a first movable direction and a second movable direction relative to the support rod, and the first movable direction and the second movable direction are in different directions; Transmission mechanism, the operating rod is connected to the first clamp head and the second clamp head respectively through the transmission mechanism, when the operating rod moves along the first movable direction relative to the support rod, the operating rod drives the first clamp head and the second clamp head to rotate synchronously relative to the connecting part through the transmission mechanism; when the operating rod moves along the second movable direction relative to the support rod, the operating rod drives the first clamp head to rotate relative to the second clamp head through the transmission mechanism.

2. The medical forceps according to claim 1, characterized in that: The operating rod extends along the length direction of the support rod; the operating rod is rotatably connected to the support rod so that the operating rod has a first movable direction relative to the support rod, and the operating rod rotates around a second axis relative to the operating rod; The operating rod is slidably connected to the support rod along the length direction of the support rod, so that the operating rod has a second movable direction relative to the support rod.

3. The medical forceps according to claim 2, characterized in that: The connecting portion is provided with a first limiting portion, and the first limiting portion is used to abut against the first clamp head to limit the moving distance of the first clamp head on the first axis; A second limiting portion is provided on the first clamp head, and the second limiting portion is used to abut against the second clamp head to limit the moving distance of the second clamp head on the first axis; The transmission mechanism comprises a driving rod and a transmission structure, the driving rod being slidably connected with the first clamp head along the first axis, the driving rod being provided with a third limiting portion, the third limiting portion being used to abut against the first clamp head to limit the angle of rotation of the first clamp head relative to the driving rod; the driving rod is slidably and rotatably connected with the second clamp head, the sliding direction of the driving rod relative to the second clamp head extends along the first axis, and the second clamp head rotates around the first axis relative to the driving rod; a guide rail is provided on the outer peripheral surface of the driving rod corresponding to the second clamp head, the guide rail extends spirally along the first axis, and the second clamp head is provided with a guide portion slidably matched with the guide rail; When the operating rod moves along the first movable direction relative to the support rod, the operating rod drives the driving rod to rotate relative to the connecting part through the transmission structure, so as to drive the first clamp head and the second clamp head to rotate synchronously relative to the connecting part; when the operating rod moves along the second movable direction relative to the support rod, the operating rod drives the driving rod to slide relative to the first clamp head through the transmission structure, so as to drive the first clamp head to rotate relative to the second clamp head.

4. The medical forceps according to claim 3, characterized in that: The transmission structure includes a first bevel gear and a second bevel gear meshing with each other, the first bevel gear is slidably connected to the operating rod along the length direction of the operating rod, the operating rod is provided with a fourth limiting portion, the fourth limiting portion is used to abut against the first bevel gear to limit the angle of rotation of the first bevel gear around the operating rod; the second bevel gear is slidably connected to the driving rod along the length direction of the driving rod, the driving rod is provided with a fifth limiting portion, the fifth limiting portion is used to abut against the second bevel gear to limit the angle of rotation of the second bevel gear around the driving rod; The transmission structure also includes an elastic member and a pushing portion arranged at one end of the operating rod close to the connecting portion. When the operating rod moves in the direction from the second end to the first end of the support rod, the pushing portion is used to abut against the end of the driving rod close to the operating rod to push the driving rod to slide relative to the first clamp head along the direction from the connecting portion to the first clamp head; one end of the elastic member is connected to the connecting portion, and the other end of the elastic member is connected to the driving rod to apply an elastic force to the driving rod to make the driving rod slide toward the operating rod.

5. The medical forceps according to claim 4, characterized in that: The connecting portion has an accommodating cavity, and the first bevel gear and the second bevel gear are accommodated in the accommodating cavity.

6. The medical forceps according to claim 5, characterized in that: The inner wall of the accommodating cavity near the side of the clamp head assembly is provided with an accommodating groove, and the driving rod passes through the bottom surface of the accommodating groove and is slidably connected with the first clamp head, and is slidably connected and rotatably connected with the second clamp head; The outer peripheral surface of the driving rod is convexly provided with an abutment portion, and the abutment portion is arranged opposite to the bottom surface of the accommodating groove; the elastic member is located between the bottom surface of the accommodating groove and the abutment portion, one end of the elastic member abuts against the bottom surface of the accommodating groove, and the other end of the elastic member abuts against the abutment portion; the elastic member is a spring; and the elastic member is sleeved on the driving rod.

7. The medical forceps according to claim 6, characterized in that: The abutment portion is slidably and rotatably connected to the inner side surface of the accommodating groove, and the abutment portion slides along the first axis in the accommodating groove; the abutment portion rotates around the first axis in the accommodating groove.

8. The medical forceps according to claim 6, characterized in that: The support rod is a sleeve structure, the support rod is sleeved on the operating rod, and one end of the operating rod away from the connecting portion extends out of the support rod; an adjusting knob is provided at one end of the operating rod away from the connecting portion.

9. The medical forceps according to any one of claims 3 to 8, characterized in that: The connecting portion is provided with a first hinge protrusion, and the first pliers head is provided with a first hinge hole, and the first hinge protrusion is inserted into the first hinge hole so that the connecting portion is rotatably connected to the first pliers head; a first limiting protrusion is provided on the outer peripheral surface of the first hinge protrusion, and a first limiting groove is provided on the inner surface of the first hinge hole at a position corresponding to the first limiting protrusion, and the first limiting groove extends along the circumference of the first hinge hole, and the first limiting protrusion is slidably installed in the first limiting groove along the circumference of the first hinge hole to limit the moving distance of the first pliers head relative to the connecting portion on the first axis; The first pliers head includes a first pliers head body and a first hinged portion, the first hinged portion includes a first sub-hinge portion and a second sub-hinge portion which are separately arranged, the first sub-hinge portion and the second sub-hinge portion enclose the first hinged portion to form the first hinged hole, and the second sub-hinge portion is connected to the first pliers head body at a side away from the first sub-hinge portion.

10. The medical forceps according to claim 9, characterized in that: A second hinge protrusion is convexly provided on a side of the first clamp head away from the connecting portion, and a second hinge hole is provided on the second clamp head, and the second hinge protrusion is inserted into the second hinge hole so that the second clamp head is rotatably connected to the first clamp head; a second limiting protrusion is convexly provided on the outer circumferential surface of the second hinge protrusion, and a second limiting groove is provided on the inner surface of the second hinge hole at a position corresponding to the second limiting protrusion, and the second limiting groove extends along the circumference of the second hinge hole, and the second limiting protrusion is slidably installed in the second limiting groove along the circumference of the second hinge hole to limit the moving distance of the second clamp head relative to the connecting portion on the first axis; The second pliers head includes a second pliers head body and a second hinged portion, the second hinged portion includes a third sub-hinge portion and a fourth sub-hinge portion which are separately arranged, the third sub-hinge portion and the fourth sub-hinge portion enclose the second hinged hole, and the third sub-hinge portion is connected to the second pliers head body on one side away from the fourth sub-hinge portion.

Images