Handle device and surgical instrument

Abstract

The utility model relates to a handle device and a surgical instrument. The handle device comprises a connecting piston, a handle mechanism and an I-shaped piece, the handle mechanism is provided with a first U-shaped groove, the first U-shaped groove comprises a first base and two first cantilevers, each first cantilever comprises a first end and a second end which are oppositely arranged, the first ends of the two first cantilevers are both connected with the first base, and the second ends of the two first cantilevers are both connected with the I-shaped piece. First connecting holes are formed in the second ends of the two first cantilevers, and the second ends of the two first cantilevers can be close to or away from each other under the action of external force; the I-shaped piece is connected with the handle mechanism and the piston and comprises a longitudinal rod and two transverse rods, each transverse rod comprises a central part and two connecting end parts located on the two sides of the central part, the two ends of the longitudinal rod are connected with the central parts of the two transverse rods correspondingly, and the two connecting end parts of the same transverse rod are rotationally connected with first connecting holes of the two first cantilevers correspondingly; and the other cross rod is rotationally connected with the connecting piston.

Description

Technical Field

[0001] The present application belongs to the field of medical technology, and in particular relates to a handle device and a surgical instrument. Background Art

[0002] Various surgical instruments are often used in surgery, such as foreign body forceps, separation scissors, etc. Their instrument heads are the action parts, and the instrument handles are the operation parts. Surgical instruments can be divided into those with detachable heads and handles, and those with integrated heads and handles.

[0003] Among them, the handle part of the detachable surgical instrument is usually connected by connecting rods, pins, etc., with more parts and more complicated installation. The production cost is too high and the production efficiency is low during the processing and assembly of the parts. Utility Model Content

[0004] The embodiment of the present application provides a detachable handle device with low cost and high production efficiency.

[0005] An embodiment of the present application provides a handle device, including a connecting piston, a handle mechanism and an I-shaped piece, wherein a first U-shaped groove is provided on the handle mechanism, the first U-shaped groove includes a first base and two first cantilevers, the first cantilevers include a first end and a second end arranged opposite to each other, the first ends of the two first cantilevers are connected to the first base, the second ends of the two first cantilevers are provided with a first connecting hole, and the second ends of the two first cantilevers can move closer to or away from each other under the action of an external force; the I-shaped piece connects the handle mechanism and the connecting piston, the I-shaped piece includes a longitudinal rod and two cross rods, the cross rod includes a central portion and two connecting ends located on both sides of the central portion, the two ends of the longitudinal rod are respectively connected to the central portions of the two cross rods, the two connecting ends of the same cross rod are respectively rotatably connected to the first connecting holes of the two first cantilevers, and the other cross rod is rotatably connected to the connecting piston.

[0006] According to the implementation scheme of the first aspect of the present application, the handle mechanism includes a central arm and a second cantilever, and multiple second cantilever arms are arranged around the central arm. The second cantilever includes a third end and a fourth end that are relatively arranged. The third ends of the multiple second cantilever arms are all connected to the central arm, and the fourth ends of the multiple second cantilever arms can move closer to or away from each other under the action of external force, and the first U-shaped groove is located at the fourth end; the second cantilever is arranged in a one-to-one correspondence with the I-shaped piece.

[0007] According to the implementation of the first aspect of the present application, the number of the second cantilever and the number of the I-shaped member are both two.

[0008] According to the implementation scheme of the first aspect of the present application, the central arm extends along the first direction, and the central arm includes a fifth end and a sixth end arranged relatively along the first direction, the fifth end is connected to the second cantilever, and the sixth end is provided with a piston sleeve that is at least partially sleeved on the connecting piston. When the multiple fourth ends move closer to or away from each other under the action of external force, they drive the I-shaped part and drive the connecting piston to move in the piston sleeve along the first direction.

[0009] According to the implementation scheme of the first aspect of the present application, an avoidance groove connected to the piston sleeve is also provided on the sixth end, and at least part of the I-shaped piece extends from the piston sleeve and passes through the avoidance groove to be rotatably connected to the first U-shaped groove.

[0010] According to the implementation scheme of the first aspect of the present application, the connecting piston includes a second base and a second U-shaped groove, the second U-shaped groove includes a third base and two third cantilevers, the third cantilever includes a seventh end and an eighth end arranged opposite to each other, the seventh ends of the two third cantilevers are both connected to the third base, the eighth ends of the two third cantilevers are both provided with a second connecting hole, and the eighth ends of the two third cantilevers can move closer to or away from each other under the action of external force; the two connecting ends of the same cross bar are respectively rotatably connected to the second connecting holes of the two third cantilevers.

[0011] According to the implementation of the first aspect of the present application, the second U-shaped grooves are arranged in a one-to-one correspondence with the I-shaped pieces.

[0012] According to an implementation of the first aspect of the present application, a third connecting hole for connecting to the instrument head is provided on a side of the second base facing away from the second U-shaped groove.

[0013] According to an implementation of the first aspect of the present application, a gap groove is formed between the two first cantilevers of the same first U-shaped groove, and the gap groove includes a straight section and a circular hole section, and the width of the straight section is smaller than the diameter of the circular hole section.

[0014] On the other hand, an embodiment of the present application further provides an implantation system, comprising an instrument head and the handle device as described above, wherein the instrument head is connected to a connecting piston.

[0015] The handle device of the embodiment of the present application includes a connecting piston, a handle mechanism and an I-shaped piece. The handle mechanism is provided with a first U-shaped groove. The first U-shaped groove includes a first base and two first cantilevers. The first cantilevers include a first end and a second end arranged opposite to each other. The first ends of the two first cantilevers are both connected to the first base. The second ends of the two first cantilevers are both provided with a first connecting hole. The second ends of the two first cantilevers can move closer to or away from each other under the action of external force. The I-shaped piece connects the handle mechanism and the connecting piston. The I-shaped piece includes a longitudinal rod and two cross rods. The cross rod includes a central part and two connecting ends located on both sides of the central part. The two ends of the longitudinal rod are respectively connected to the central parts of the two cross rods. The two connecting ends of the same cross rod are respectively rotatably connected to the first connecting holes of the two first cantilevers. The other cross rod is rotatably connected to the connecting piston. The present application sets an I-shaped piece to connect the handle mechanism and the connecting piston, and sets a first U-shaped groove on the handle mechanism. The two first cantilevers on the first U-shaped groove can move closer to or away from each other under the action of external force, so that the cross bar of the I-shaped piece can open the two first cantilevers and allow the two connecting ends to be rotatably connected to the first connecting holes on the two first cantilevers. After the connecting ends enter the first connecting holes, the first cantilevers rebound after the external force is lost, so that the I-shaped piece and the handle mechanism are connected as a whole. Compared with other connection methods, the handle device of the present application has fewer parts, low production costs and higher production and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the exploded structure of the handle device of some embodiments of the present application;

[0018] Figure 2 A schematic structural diagram of an exemplary I-shaped member is shown;

[0019] Figure 3 An example is shown Figure 1 An enlarged structural schematic diagram of the handle device in position A;

[0020] Figure 4 A schematic structural diagram of an exemplary second cantilever is shown;

[0021] Figure 5 A schematic diagram of the front view structure of an example of a second cantilever is shown;

[0022] Figure 6 An example is shown Figure 1 A schematic cross-sectional view of the handle device;

[0023] Figure 7 A schematic diagram showing the structure of an exemplary connecting piston with some structures hidden;

[0024] Figure 8 An example is shown Figure 7 Schematic diagram of the front view structure of the connecting piston in.

[0025] Reference numerals:

[0026] 10. Handle device;

[0027] 100, connecting piston; 110, second base; 111, third connecting hole; 120, second U-shaped groove; 121, third base; 122, third cantilever; 123, seventh end; 124, eighth end; 125, second connecting hole;

[0028] 200, handle mechanism; 210, first U-shaped groove; 211, first base; 212, first cantilever; 213, first end; 214, second end; 215, first connecting hole; 216, clearance groove; 217, straight section; 218, round hole section; 220, central arm; 221, fifth end; 222, sixth end; 223, piston sleeve; 224, limiter; 225, avoidance groove; 230, second cantilever; 231, third end; 232, fourth end;

[0029] 300, I-shaped member; 310, longitudinal bar; 320, cross bar; 321, central part; 322, connecting end;

[0030] x, first direction. DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0033] The applicant found that in the prior art, the handle portion of a detachable surgical instrument is usually connected by means of connecting rods, pins, etc., has many parts and is complex to install. The production cost is too high and the production efficiency is low during the processing and assembly of the parts.

[0034] In view of the above problems, the applicant proposed a handle device, including a connecting piston, a handle mechanism and an I-shaped piece, the handle mechanism is provided with a first U-shaped groove, the first U-shaped groove includes a first base and two first cantilevers, the first cantilever includes a first end and a second end arranged opposite to each other, the first ends of the two first cantilevers are connected to the first base, the second ends of the two first cantilevers are provided with a first connecting hole, and the second ends of the two first cantilevers can move closer to or away from each other under the action of external force; the I-shaped piece connects the handle mechanism and the connecting piston, the I-shaped piece includes a longitudinal rod and two cross rods, the cross rod includes a central part and two connecting ends located on both sides of the central part, the two ends of the longitudinal rod are respectively connected to the central parts of the two cross rods, the two connecting ends of the same cross rod are respectively rotatably connected to the first connecting holes of the two first cantilevers, and the other cross rod is rotatably connected to the connecting piston.

[0035] The handle device provided by the present application is configured to connect the handle mechanism and the connecting piston by setting an I-shaped piece, and a first U-shaped groove is set on the handle mechanism. The two first cantilevers on the first U-shaped groove can move closer to or away from each other under the action of external force, so that the cross bar of the I-shaped piece can open the two first cantilevers and allow the two connecting ends to be rotatably connected to the first connecting holes on the two first cantilevers. After the connecting ends enter the first connecting holes, the first cantilevers rebound after the external force is lost, so that the I-shaped piece and the handle mechanism are connected as a whole. Compared with other connection methods, the handle device of the present application has fewer parts, low production costs and higher production and assembly efficiency.

[0036] The handle device provided in the embodiment of the present application is described below in conjunction with the accompanying drawings. It is noted that the x direction in the accompanying drawings is the first direction. In the accompanying drawings, for the convenience of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions. For the sake of clarity, some contour lines may be hidden in the accompanying drawings.

[0037] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the exploded structure of the handle device of some embodiments of the present application; Figure 2 A schematic structural diagram of an exemplary I-shaped member is shown; Figure 3 An example is shown Figure 1 Schematic diagram of the enlarged structure of the handle device in position A.

[0038] like Figures 1 to 3 As shown, the present application provides a handle device 10, including a connecting piston 100, a handle mechanism 200 and an I-shaped member 300, the handle mechanism 200 is provided with a first U-shaped groove 210, the first U-shaped groove 210 includes a first base 211 and two first cantilevers 212, the first cantilever 212 includes a first end 213 and a second end 214 arranged opposite to each other, the first ends 213 of the two first cantilevers 212 are both connected to the first base 211, the second ends 214 of the two first cantilevers 212 are both provided with a first connecting hole 215, and the second ends 214 of the two first cantilevers 212 can move closer to or away from each other under the action of external force. The I-shaped member 300 connects the handle mechanism 200 and the connecting piston 100. The I-shaped member 300 includes a longitudinal rod 310 and two cross rods 320. The cross rod 320 includes a central portion 321 and two connecting end portions 322 located on both sides of the central portion 321. The two ends of the longitudinal rod 310 are respectively connected to the central portions 321 of the two cross rods 320. The two connecting end portions 322 of the same cross rod 320 are respectively rotatably connected to the first connecting holes 215 of the two first cantilevers 212. The other cross rod 320 is rotatably connected to the connecting piston 100.

[0039] Optionally, the connecting piston 100 is used to connect with an instrument head (not shown), which may be a foreign body forceps, a separating scissors, a scalpel, etc. The instrument head may be a disposable device, which is removed from the connecting piston 100 and discarded after use, and a new instrument head is installed on the connecting piston 100, while the handle device 10 is reusable, thereby reducing the cost of surgery while ensuring sanitary conditions.

[0040] Optionally, the handle device 10 is made of a strong and elastic material such as metal, metal oxide or medical organic material, so that the two second ends 214 of the first U-shaped groove 210 can move closer to or away from each other under the action of external force, and the second ends 214 will rebound and return to their original positions when the external force is removed. The length of the crossbar 320 is greater than the spacing between the two second ends 214 of the same first U-shaped groove 210, so that when the crossbar 320 extends into the first U-shaped groove 210, it squeezes the two first cantilevers 212 so that the two first cantilevers 212 are stretched apart. When the two connecting ends 322 of the same crossbar extend into the first connecting holes 215 on the two first cantilevers 212, the two first cantilevers 212 are not squeezed by the I-shaped member 300 and rebound under the action of their own elastic potential energy and clamp the I-shaped member 300 in the first U-shaped groove 210, so that the I-shaped member 300 can only rotate relative to the first U-shaped groove 210 along the axis of the crossbar 320.

[0041] The handle device 10 provided in this embodiment connects the handle mechanism 200 and the connecting piston 100 by setting an I-shaped piece 300, and a first U-shaped groove 210 is set on the handle mechanism 200. The two first cantilevers 212 on the first U-shaped groove 210 can move closer to or away from each other under the action of external force, so that the cross bar 320 of the I-shaped piece 300 can open the two first cantilevers 212 and allow the two connecting ends 322 to be rotatably connected to the first connecting holes 215 on the two first cantilevers 212. When the connecting ends 322 enter the first connecting holes 215, the first cantilevers 212 rebound after the external force is lost, so that the I-shaped piece 300 and the handle mechanism 200 are connected as a whole. Compared with other connection methods, the handle device 10 of the present application has fewer parts, low production cost and higher production and assembly efficiency.

[0042] Please refer to Figures 3 to 5 , Figure 4 A schematic structural diagram of an exemplary second cantilever is shown; Figure 5 A schematic front view of the structure of an exemplary second cantilever is shown.

[0043] In some optional embodiments, a gap groove 216 is formed between the two first cantilevers 212 of the same first U-shaped groove 210, and the gap groove 216 includes a straight section 217 and / or a circular hole section 218, and the width of the straight section 217 is smaller than the diameter of the circular hole section 218. The straight section 217 and the circular hole section 218 are both used to ensure that there is a certain elasticity between the two first cantilevers 212, thereby realizing the function that the two first cantilevers 212 can move closer to or farther from each other.

[0044] The handle mechanism 200 includes a second cantilever 230 . The second cantilever 230 includes a third end 231 and a fourth end 232 that are oppositely disposed. The first U-shaped groove 210 is located at the fourth end 232 .

[0045] Optional, such as Figures 3 to 5 As shown, the gap groove 216 includes a straight section 217 and a circular hole section 218 that are interconnected. The circular hole section 218 is located on the side of the straight section 217 facing the first base 211, and the width of the straight section 217 is smaller than the diameter of the circular hole section 218. The width of the gap groove 216 in the direction close to the first base 211 is first constant, then gradually increases, and then gradually decreases. By providing the circular hole section 218 on the side of the gap groove 216 close to the first base 211, the maximum spacing between the second ends 214 of the two first cantilevers 212 when they are separated from each other is increased, thereby reducing the difficulty of assembling the I-shaped member 300 and the first U-shaped groove 210, and improving the assembly efficiency of the handle mechanism 10.

[0046] In other embodiments, the gap groove 216 may only include a straight section 217 or a round hole section 218 , as long as the elasticity between the two first cantilevers 212 can be increased.

[0047] Please refer to Figure 1 and Figure 6 , Figure 6 An example is shown Figure 1 A schematic cross-sectional structural diagram of the handle device in FIG.

[0048] like Figure 1 and Figure 6 As shown, in some optional embodiments, the handle mechanism 200 includes a central arm 220 and a second cantilever 230, a plurality of second cantilever 230 are arranged around the central arm 220, the second cantilever 230 includes a third end 231 and a fourth end 232 arranged opposite to each other, the third ends 231 of the plurality of second cantilever 230 are all connected to the central arm 220, the fourth ends 232 of the plurality of second cantilever 230 can move closer to or away from each other under the action of an external force, and the first U-shaped groove 210 is located at the fourth end 232. The second cantilever 230 is arranged one-to-one with the I-shaped member 300.

[0049] Optionally, the first cantilever 212 is located on a side of the first base 211 away from the third end 231. The plurality of second cantilevers 230 form a tweezer-like structure.

[0050] Optionally, the number of the second cantilevers 230 and the I-shaped member 300 is the same, for example, the number of the second cantilevers 230 and the I-shaped member 300 are both two, and in this case, the two second cantilevers 230 are located on both sides of the central arm 220. When the number of the second cantilevers 230 and the I-shaped member 300 is more than two, the distance between two adjacent second cantilevers 230 is equal, so that the plurality of second cantilevers 230 can surround the central arm 220 at equal intervals.

[0051] The handle device 10 provided in this embodiment connects multiple second cantilevers 230 and the connecting piston 100 by setting multiple I-shaped pieces 300, and the multiple second cantilevers 230 are arranged around the central arm 220, so that the connecting piston 100 can move stably along a fixed trajectory under the joint action of the multiple I-shaped pieces 300 on the peripheral side.

[0052] Please continue to refer to Figure 3 and Figure 6 In some optional embodiments, the central arm 220 extends along a first direction (the x direction in the figure), and the central arm 220 includes a fifth end 221 and a sixth end 222 that are relatively arranged along the first direction x, the fifth end 221 is connected to the second cantilever 230, and the sixth end 222 is provided with a piston sleeve 223 that is at least partially sleeved on the connecting piston 100. When the multiple fourth ends 232 move closer to or away from each other under the action of external force, they drive the I-shaped member 300 and drive the connecting piston 100 to move along the first direction x in the piston sleeve 223.

[0053] Optionally, the central axis (not shown) of the central arm 220 extends along the first direction x, and the plurality of second cantilevers 230 are arranged around the central axis. The central axis of the piston sleeve 223 is colinear with the central axis of the central arm 220. When the plurality of fourth ends 232 move toward or away from each other under the action of an external force, they drive the I-shaped member 300 and the connecting piston 100 to move along the central axis of the central arm 220 in the piston sleeve 223.

[0054] Optionally, a limiting portion 224 is provided on one side of the piston sleeve 223 facing the fifth end 221 , and the limiting portion 224 is used to abut against the connecting piston 100 when the connecting piston 100 moves toward the fifth end 221 to prevent the connecting piston 100 from escaping from the piston sleeve 223 .

[0055] The handle device 10 provided in this embodiment has a piston sleeve 223 at the sixth end 222 that is at least partially sleeved on the connecting piston 100. The piston sleeve 223 can improve the stability of the connecting piston 100 during movement and maintain the connecting piston 100 always moving along the central axis of the central arm 220.

[0056] In some optional embodiments, the sixth end 222 is further provided with an avoidance groove 225 communicating with the piston sleeve 223 , and at least a portion of the I-shaped member 300 extends from the piston sleeve 223 and passes through the avoidance groove 225 to be rotatably connected to the first U-shaped groove 210 .

[0057] Optionally, the avoidance groove 225 is located on a side of the piston sleeve 223 facing the fifth end 221 .

[0058] The handle device 10 provided in this embodiment increases the range of motion of the I-shaped member 300 by providing an avoidance groove 225 on the sixth end 222 , thereby facilitating the connection between the I-shaped member 300 and the first U-shaped groove 210 .

[0059] Please refer to Figure 1 , Figures 6 to 8 , Figure 7 A schematic diagram showing the structure of an exemplary connecting piston with some structures hidden; Figure 8 An example is shown Figure 7 Schematic diagram of the front view structure of the connecting piston in.

[0060] like Figure 1 , Figures 6 to 8 As shown, in some optional embodiments, the connecting piston 100 includes a second base 110 and a second U-shaped groove 120, the second U-shaped groove 120 includes a third base 121 and two third cantilevers 122, the third cantilevers 122 include a seventh end 123 and an eighth end 124 arranged opposite to each other, the seventh ends 123 of the two third cantilevers 122 are both connected to the third base 121, the eighth ends 124 of the two third cantilevers 122 are both provided with a second connecting hole 125, and the eighth ends 124 of the two third cantilevers 122 can move closer to or away from each other under the action of external force. The two connecting ends 322 of the same crossbar 320 are rotatably connected to the second connecting holes 125 of the two third cantilevers 122 respectively.

[0061] In order to accurately show the structure of the connecting piston 100, Figure 7 and Figure 8 The connecting piston 100 in each case hides a third cantilever 122 and a portion of the second base 110 .

[0062] Optionally, the two connecting ends 322 of one of the two cross bars 320 of the I-shaped member 300 extend into the two second connecting holes 125 of the same second U-shaped groove 120 , and the two connecting ends 322 of the other cross bar 320 extend into the two first connecting holes 215 of the same first U-shaped groove 210 .

[0063] Optionally, the connecting piston 100 is made of a strong and elastic material such as metal, metal oxide or medical organic material, so that the eighth ends 124 of the two third cantilevers 122 of the second U-shaped groove 120 can move closer to or away from each other under the action of external force, and the eighth ends 124 will rebound and return to their original positions when the external force is lost. The length of the crossbar 320 is greater than the distance between the two eighth ends 124 of the same second U-shaped groove 120, so that when the crossbar 320 extends into the second U-shaped groove 120, it squeezes the two third cantilevers 122 so that the two third cantilevers 122 are stretched apart. When the two connecting ends 322 of the same crossbar 320 extend into the second connecting holes 125 on the two third cantilevers 122, the two third cantilevers 122 are not squeezed by the I-shaped piece 300 and rebound under the action of their own elastic potential energy and clamp the I-shaped piece 300 in the second U-shaped groove 120, so that the I-shaped piece 300 can only rotate relative to the second U-shaped groove 120 along the axis of the crossbar 320.

[0064] Optionally, the lengths and diameters of the two crossbars 320 of the I-shaped member 300 may be different to accommodate the different sizes of the second U-shaped groove 120 and the first U-shaped groove 210. The lengths and diameters of the two crossbars 320 of the I-shaped member 300 may also be the same, in which case the second U-shaped groove 120 and the first U-shaped groove 210 are also the same in size, and the I-shaped member 300 does not need to distinguish between the front and back during assembly, further improving assembly efficiency.

[0065] Optionally, the number of the second U-shaped grooves 120 and the number of the I-shaped pieces 300 are equal and arranged in one-to-one correspondence. In this embodiment, the number of the I-shaped pieces 300 is two as an example. When the number of the I-shaped pieces 300 is more than two, the distance between two adjacent second U-shaped grooves 120 is equal, and the second U-shaped grooves 120 are arranged around the central axis of the central arm 220.

[0066] The handle device 10 provided in this embodiment connects multiple second cantilevers 230 and multiple second U-shaped grooves 120 by setting multiple I-shaped pieces 300, and the multiple second U-shaped grooves 120 are arranged around the central axis of the central arm 220, so that the connecting piston 100 can move stably along a fixed trajectory under the joint action of multiple I-shaped pieces 300 on the peripheral side.

[0067] In some optional embodiments, a third connecting hole 111 for connecting with an instrument head is provided on a side of the second base 110 facing away from the second U-shaped groove 120 .

[0068] Optionally, the instrument head and the third connecting hole 111 may be connected by threading or snapping.

[0069] The embodiment of the second aspect of the present application also provides a surgical instrument, including the handle device 10 and the instrument head of any of the above-mentioned first aspect embodiments. Since the surgical instrument provided by the embodiment of the second aspect of the present application includes the handle device 10 of any of the above-mentioned first aspect embodiments, the surgical instrument provided by the embodiment of the second aspect of the present application has the beneficial effects of the handle device 10 of any of the above-mentioned first aspect embodiments, which will not be repeated here.

[0070] Optionally, the instrument head may be foreign body forceps, separating scissors, a scalpel, etc., and the instrument head is connected to the connecting piston 100 .

[0071] When the user assembles the handle device 10, first press one of the cross bars 320 of the I-shaped piece 300 into the second U-shaped groove 120 of the connecting piston 100. After all the I-shaped pieces 300 are connected to the connecting piston 100, the I-shaped piece 300 is extended into the piston sleeve 223 and extended from the avoidance groove 225, and at least part of the connecting piston 100 is located in the piston sleeve 223. Then, the other cross bars 320 of the multiple I-shaped pieces 300 are respectively pressed into different first U-shaped grooves 210, so that the connecting piston 100, the handle mechanism 200 and the I-shaped piece 300 are connected as a whole.

[0072] When the surgical instrument is in use, the user can squeeze the second cantilever 230 toward the central arm 220 to move the connecting piston 100 in the first direction x away from the fifth end 221, so that the instrument head on the connecting piston 100 also moves forward and completes the surgical operation. When the user lets go, the second cantilever 230 rebounds under the action of elastic potential energy, and the connecting piston 100 and the instrument head retract through the drive of the I-shaped piece 300.

[0073] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A handle device, characterized in that: include: Connect the piston; A handle mechanism, wherein the handle mechanism is provided with a first U-shaped groove, the first U-shaped groove includes a first base and two first cantilevers, the first cantilevers include a first end and a second end that are oppositely arranged, the first ends of the two first cantilevers are both connected to the first base, the second ends of the two first cantilevers are both provided with a first connecting hole, and the second ends of the two first cantilevers can move closer to or away from each other under the action of an external force; An I-shaped piece connects the connecting piston and the handle mechanism, the I-shaped piece includes a longitudinal rod and two cross rods, the cross rod includes a central portion and two connecting end portions located on both sides of the central portion, the two ends of the longitudinal rod are respectively connected to the central portions of the two cross rods, the two connecting end portions of the same cross rod are respectively rotatably connected to the first connecting holes of the two first cantilevers, and the other cross rod is rotatably connected to the connecting piston.

2. The handle device according to claim 1, characterized in that: The handle mechanism includes a central arm and a second cantilever, and a plurality of second cantilever arms are arranged around the central arm. The second cantilever includes a third end and a fourth end that are arranged opposite to each other. The third ends of the plurality of second cantilever arms are all connected to the central arm, and the fourth ends of the plurality of second cantilever arms can move closer to or away from each other under the action of external force, and the first U-shaped groove is located at the fourth end; the second cantilever and the I-shaped piece are arranged one by one.

3. The handle device according to claim 2, characterized in that: The number of the second cantilever and the number of the I-shaped member are both two.

4. The handle device according to claim 2, characterized in that: The central arm extends along a first direction, and includes a fifth end and a sixth end arranged opposite to each other along the first direction, the fifth end is connected to the second cantilever, and the sixth end is provided with a piston sleeve which is at least partially sleeved on the connecting piston. When the plurality of fourth ends move closer to or away from each other under the action of external force, they drive the I-shaped part and the connecting piston to move in the piston sleeve along the first direction.

5. The handle device according to claim 4, characterized in that: The sixth end is also provided with an avoidance groove communicated with the piston sleeve, and at least a portion of the I-shaped piece extends out from the piston sleeve and passes through the avoidance groove to be rotatably connected to the first U-shaped groove.

6. The handle device according to claim 1, characterized in that: The connecting piston comprises a second base and a second U-shaped groove, the second U-shaped groove comprises a third base and two third cantilevers, the third cantilevers comprise a seventh end and an eighth end arranged opposite to each other, the seventh ends of the two third cantilevers are both connected to the third base, the eighth ends of the two third cantilevers are both provided with a second connecting hole, and the eighth ends of the two third cantilevers can move closer to or away from each other under the action of an external force; The two connecting ends of the same cross bar are rotatably connected to the second connecting holes of the two third cantilevers respectively.

7. The handle device according to claim 6, characterized in that: The second U-shaped grooves are arranged in one-to-one correspondence with the I-shaped pieces.

8. The handle device according to claim 6, characterized in that: A third connecting hole for connecting with an instrument head is provided on a side of the second base facing away from the second U-shaped groove.

9. The handle device according to claim 1, characterized in that: A gap groove is formed between the two first cantilevers of the same first U-shaped groove, and the gap groove includes a straight section and / or a circular hole section, and the width of the straight section is smaller than the diameter of the circular hole section.

10. A surgical instrument, characterized in that: The invention comprises an instrument head and a handle device as claimed in any one of claims 1 to 9, wherein the instrument head is connected to the connecting piston.

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