CN109498157B - Knife handle assembly and sleeve - Google Patents
Knife handle assembly and sleeve Download PDFInfo
- Publication number
- CN109498157B CN109498157B CN201811488322.XA CN201811488322A CN109498157B CN 109498157 B CN109498157 B CN 109498157B CN 201811488322 A CN201811488322 A CN 201811488322A CN 109498157 B CN109498157 B CN 109498157B
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- sleeve
- mounting groove
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- guide
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000000670 limiting effect Effects 0.000 claims description 39
- 230000013011 mating Effects 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 14
- 238000001356 surgical procedure Methods 0.000 abstract description 6
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 2
- 210000004872 soft tissue Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
- A61B17/32093—Incision instruments for skin incisions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
- A61B17/3211—Surgical scalpels, knives; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Robotics (AREA)
- Surgical Instruments (AREA)
Abstract
The embodiment of the invention provides a cutter handle assembly and a sleeve, wherein the cutter handle assembly is used for being matched with a guide device and comprises the sleeve and a cutter handle. The sleeve comprises two end faces oppositely arranged in a first direction, a mounting groove penetrating at least one end face and extending along the first direction, and an outer cylinder wall of the sleeve is provided with a matching part for matching with the guide; the handle of a knife includes along the installation department and the switching portion that the first direction distributes in succession, and the installation department is used for installing the scalpel, and switching portion can set up in telescopic mounting groove so that the handle of a knife is connected in the sleeve. In certain bone surgery, the guide of navigation finds the target position, then the scalpel can directly set up in the guide through the handle of a knife subassembly to direct cutting of cutting down, avoid the position error that is caused by doctor's visual examination cutting down, can effectively improve the accuracy of cutting down position.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a knife handle assembly and a sleeve.
Background
In recent years, surgical navigation systems have been increasingly used in neurosurgery, bone surgery, and other operations. The surgical navigation system can plan a surgical path before or during surgery so as to quickly and accurately implement surgical operation and reduce surgical wounds. For example, in some orthopedic procedures, it is necessary to tap a screw into the patient's site, which requires first cutting the soft tissue into the patient's site to expose the bone surface of the target area (the bone surface of the access point). When using the navigation system to do this, the guide is first placed by the robot at the target location, with the center line of the guide coincident with the planned screw path (the guide having a slot/through hole or like structure through which the guide pin, drill bit or the like can pass to drill precisely on the bone surface), the physician visually determines the area of the affected area where the guide center line is approximately aligned, then cuts the skin muscle tissue of that area to expose the bone surface, and finally inserts the guide pin or other instrument from the guide into the drilled bone surface.
The navigation system and the guide can improve the accuracy of the position of the nail entering point on the bone surface, but the position of the knife for cutting the soft tissue of the human body is selected by the doctor visually, the error is large, and a large incision can be needed to be cut to correctly expose the bone surface of the nail entering point.
Accordingly, a need exists for a solution to the problem of improving the positioning accuracy of the lower blade to further reduce the incision in human tissue.
Disclosure of Invention
The embodiment of the invention provides a cutter handle assembly and a sleeve, which aim to improve the accuracy of a cutter feeding position.
In one aspect, an embodiment of the present invention provides a tool shank assembly for cooperating with a guide, the tool shank assembly comprising: a sleeve including two end surfaces disposed opposite to each other in a first direction, a mounting groove penetrating at least one of the end surfaces and extending in the first direction, and an outer cylinder wall of the sleeve having a fitting portion for fitting with the guide; and the knife handle comprises a mounting part and a switching part which are sequentially distributed along the first direction, the mounting part is used for mounting the surgical knife, and the switching part can be arranged in a mounting groove of the sleeve so that the knife handle is connected with the sleeve.
According to one aspect of the invention, the sleeve further comprises:
the pre-tightening hole is communicated with the mounting groove, and the mounting groove and the pre-tightening hole penetrate through the two end faces along the first direction.
The pre-tightening part is positioned in the pre-tightening hole, and the pre-tightening part and the switching part positioned in the mounting groove are mutually abutted.
According to one aspect of the invention, the mounting groove is U-shaped in cross section or is a counterbore extending through at least one of the end faces.
According to one aspect of the invention, the mounting groove is formed by enclosing wall parts, and the inner surfaces of the wall parts are provided with clamping grooves;
The surface of the switching part is provided with a limiting part, and the limiting part is matched with the clamping groove.
According to one aspect of the invention, the clamping groove is formed by recessing the inner surface of the wall portion, or the clamping groove is provided through the wall portion.
According to one aspect of the invention, the opening of the clamping groove facing the inside of the mounting groove is provided with a stop part, the stop part is arranged on one side of the opening of the clamping groove far away from the pre-tightening hole, and the stop part shields part of the opening of the clamping groove.
According to one aspect of the invention, the limiting portion is formed by a surface recess of the adapting portion, and the limiting portion includes a first inner surface and a second inner surface which are oppositely arranged along the first direction, the first inner surface is arranged between the mounting portion and the second inner surface, and the second inner surface is clamped in the clamping groove.
According to an aspect of the present invention, the stopper portion further includes a bottom surface connecting the first inner surface and the second inner surface, the second inner surface being disposed obliquely in a direction approaching the first inner surface in a direction away from the bottom surface.
According to one aspect of the invention, the limiting portion protrudes from the surface of the adapting portion.
According to one aspect of the invention, the limiting part comprises a connecting end and a free end which are oppositely arranged, the limiting part is connected to the outer surface of the switching part through the connecting end, and the limiting part is obliquely arranged from the connecting end to the free end along the direction close to the mounting part.
According to one aspect of the invention, the switching part comprises a first side surface and a second side surface which are oppositely arranged along a second direction, the first side surface is in fit with the inner surface of the mounting groove, and the stopping surface of the switching part, which is far away from the mounting part, is obliquely arranged along the direction approaching the mounting part in the direction from the first side surface to the second side surface, wherein the second direction and the first direction are intersected.
According to one aspect of the invention, the mating portion is an arcuate surface disposed on the outer wall of the sleeve, or the mating portion is an elastic member disposed on the outer wall of the sleeve.
In another aspect, an embodiment of the present invention further provides a sleeve for cooperating with a guide, the sleeve including two end surfaces disposed opposite to each other in a first direction, a mounting groove penetrating at least one of the end surfaces and extending in the first direction, and an outer cylinder wall of the sleeve having a cooperating portion for cooperating with the guide.
In the cutter handle assembly provided by the embodiment of the invention, the cutter handle assembly comprises the cutter handle and the sleeve, the cutter handle comprises the mounting part and the switching part, the scalpel can be mounted on the mounting part, the sleeve comprises the mounting groove, the switching part can be mounted in the mounting groove, the outer cylinder wall of the sleeve is provided with the matching part which is matched with the guide, the sleeve can be directly arranged on the guide of the navigation system through the matching part, the cutter handle can be arranged on the guide through the sleeve, and then the scalpel can be arranged on the guide through the cutter handle assembly. In certain bone surgery, the guide of navigation finds the target position, then the scalpel can directly set up in the guide through the handle of a knife subassembly to direct cutting of cutting down, avoid the position error that is caused by doctor's visual examination cutting down, can effectively improve the accuracy of cutting down position.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading the following detailed description of non-limiting embodiments thereof, taken in conjunction with the accompanying drawings in which like or similar reference characters designate the same or similar features.
FIG. 1 is a schematic view of a tool shank assembly according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of a shank structure of a shank assembly according to an embodiment of the invention;
FIG. 4 is a schematic view of a shank structure of a shank assembly according to another embodiment of the invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a top view of a sleeve of a tool shank assembly according to an embodiment of the invention;
FIG. 7 is a bottom view of a sleeve of a tool shank assembly according to an embodiment of the invention;
FIG. 8 is a left side view of a sleeve of a tool shank assembly according to an embodiment of the invention;
FIG. 9 is a cross-sectional view of FIG. 5;
FIG. 10 is an enlarged view of the portion I of FIG. 8;
FIG. 11 is a schematic view of a portion of a sleeve of a tool shank assembly according to an embodiment of the invention.
Reference numerals illustrate:
100. A knife handle;
110. a mounting part;
120. a switching part; 121. a first side; 122. a second side; 123. a stop surface;
130. A limit part; 131. a first inner surface; 132. a second inner surface; 133. a bottom surface; 134. a connection end; 135. a free end;
200. A sleeve;
210. An end face; 211. a first end face; 212. a second end face;
220. a mounting groove; 221. a clamping groove; 222. a stop portion;
230. a pre-tightening hole;
240. A pre-tightening member.
Detailed Description
Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the embodiment of the present invention. In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The key point of the bone surgery is to find the position of drilling and nailing on the bone, the soft tissue needs to be cut at the affected part of the patient before nailing to expose the bone surface of the target area, a navigation system is generally selected in the prior art to find the target position for cutting the soft tissue, a guide of the navigation system is arranged at the tail end of a robot arm, the navigation system can control the robot arm to move to the vicinity of the affected part, the axis of the guide is coincident with the calculated nailing path, then a doctor visually determines the position of the patient aligned with the central line of the guide, and cuts the soft tissue at the position by cutting, and the doctor visually and manually cuts the soft tissue to cause larger error of the cutting position.
In order to solve this problem, the present solution is proposed.
For a better understanding of the present invention, a detailed description of a tool shank assembly and sleeve according to an embodiment of the invention is provided below in conjunction with fig. 1-11.
Referring to fig. 1 and 2 together, fig. 1 is a schematic structural view of a tool holder assembly according to an embodiment of the present invention, and fig. 2 is a cross-sectional view of fig. 1, the tool holder assembly being configured to cooperate with a guide to mount a surgical knife to the guide of a surgical navigation system, the tool holder assembly comprising: the sleeve 200 is adapted to the tool shank 100, the sleeve 200 comprises two end faces 210 oppositely arranged in a first direction, a mounting groove 220 penetrating at least one end face 210 and extending along the first direction, the adapter part 120 is arranged in the mounting groove 220, and the outer cylinder wall of the sleeve 200 is provided with an engaging part 250 for engaging with a guide; and a handle 100 including a mounting portion 110 and an adapter portion 120 sequentially arranged in a first direction, the mounting portion 110 for mounting a surgical knife.
The shape of the sleeve 200 is not limited herein, as long as the sleeve 200 can be positioned in the guide. Preferably, the sleeve 200 is generally cylindrical in shape, and the cylindrical sleeve 200 has no corners, avoiding rubbing against the inner surface of the guide.
The arrangement mode of the matching part 250 is not limited herein, and the matching part 250 may be an arc surface arranged on the outer wall of the cylinder, so as to avoid damage such as scratch to the guide when the sleeve 200 is arranged on the guide; or the matching part 250 is an elastic part arranged on the outer wall of the cylinder, the stability of the relative positions of the sleeve 200 and the guide is ensured by utilizing the elastic deformation of the elastic part, and meanwhile, the damage of the sleeve 200 to the guide such as scratch and the like can be avoided. The arrangement of the engaging portion 250 is not limited thereto, as long as the sleeve 200 can be used by the engaging portion 250 and the guide being engaged with each other.
In the tool holder assembly according to the embodiment of the present invention, the tool holder assembly includes a tool holder 100 and a sleeve 200, the tool holder 100 includes a mounting portion 110 and an adapter portion 120, a surgical knife can be mounted on the mounting portion 110, the sleeve 200 includes a mounting groove 220, the adapter portion 120 can be mounted in the mounting groove 220, an outer cylinder wall of the sleeve 200 is provided with a fitting portion 250 that is fitted with a guide, the sleeve 200 can be directly disposed on the guide of the navigation system through the fitting portion 250, so that the tool holder 100 can be disposed on the guide through the sleeve 200, and thus the surgical knife can be disposed on the guide through the tool holder assembly. In certain bone surgery, the guide of navigation finds the target position, then the scalpel can directly set up in the guide through the handle of a knife subassembly to direct cutting of cutting down, avoid the position error that is caused by doctor's visual examination cutting down, can effectively improve the accuracy of cutting down position.
Wherein, for convenience of distinction, the two end faces 210 are a first end face 211 and a second end face 212, respectively. The mounting groove 220 may be provided in a variety of ways, and the mounting groove 220 may be a counterbore extending through the first end surface 211, the counterbore forming an opening at the first end surface 211 such that the adapter 120 of the tool shank 100 may extend into the counterbore from the opening.
In alternative embodiments, mounting slot 220 is U-shaped in cross-section, and mounting slot 220 extends through not only first end surface 211, but also at least a portion of a side surface of sleeve 200 that is connected between first end surface 211 and second end surface 212, and defines an opening between the side surface and first end surface 211, to facilitate placement of adapter 120 of tool shank 100 into mounting slot 220 from the opening.
The sleeve 200 is not limited thereto, and in some alternative embodiments, the sleeve 200 further includes a pre-tightening hole 230 in communication with the mounting groove 220 and a pre-tightening member 240 disposed in the pre-tightening hole 230, the mounting groove 220 and the pre-tightening hole 230 extending through the two end surfaces 210 in the first direction, the pre-tightening member 240 being disposed in the pre-tightening hole 230 and abutting the adapter 120 disposed in the mounting groove 220.
In these alternative embodiments, by providing the pre-tightening aperture 230 and the pre-tightening member 240, the pre-tightening member 240 and the adapter 120 abut against each other, thereby providing the adapter 120 with a limit in the X-direction in fig. 2, ensuring stability of the relative position between the tool shank 100 and the sleeve 200.
Referring to fig. 3 to 5, in a plurality of alternative embodiments, the stop surface 123 of the adaptor 120 away from the mounting portion 110 is an inclined surface, for example, the adaptor 120 includes a first side 121 and a second side 122 disposed opposite to each other along a second direction, the first side 121 is attached to an inner surface of the mounting groove 220, and the stop surface 123 of the adaptor 120 away from the mounting portion 110 is disposed obliquely in a direction from the first side 121 to the second side 122 along a direction approaching the mounting portion 110, wherein the second direction intersects the first direction.
Because the stop surface 123 of the adaptor 120 far away from the mounting portion 110 is an inclined surface, that is, the stop surface 123 of the adaptor 120 near the pretensioning member 240 is an inclined surface, and the stop surface 123 is obliquely arranged along the direction near the mounting portion 110 in the direction from the first side surface 121 to the second side surface 122, the inner surface of the mounting groove 220 and the abutment of the pretensioning member 240 can provide a limiting force along the Y direction in fig. 2 to the adaptor 120, and the adaptor 120 and the pretensioning member 240 abut against each other, so that the adaptor 120 is limited in both the X direction and the Y direction in fig. 2, and the stability of the relative position between the tool shank 100 and the sleeve 200 is ensured.
Referring to fig. 6 to 11, in order to improve stability of the relative position between the tool shank 100 and the sleeve 200, in some alternative embodiments, the mounting groove 220 is formed by enclosing a wall portion, and an inner surface of the wall portion is provided with a clamping groove 221; the surface of the adapting part 120 is provided with a limiting part 130, and the limiting part 130 is matched with the clamping groove 221.
In these alternative embodiments, the engagement grooves 221 in the mounting groove 220 and the engagement grooves 221 on the adaptor 120 cooperate to provide the adaptor 120 with a limit in the X-direction, so as to further ensure stability of the relative position between the tool shank 100 and the sleeve 200.
The clamping grooves 221 may be arranged in various manners, and the clamping grooves 221 may be blind holes formed by recessing the inner surface of the wall portion, or the clamping grooves 221 may be arranged through the wall portion. Preferably, the locking groove 221 is provided through the wall portion so that the engagement between the locking groove 221 and the stopper 130 can be observed from the outside of the sleeve 200.
Further, a stop portion 222 is disposed at an opening of the clamping groove 221 facing the mounting groove 220, the stop portion 222 is disposed at a side of the opening far away from the pre-tightening hole 230, and the stop portion 222 shields a portion of the opening.
In these alternative embodiments, a stop portion 222 is disposed at the opening of the clamping groove 221, and the position of the stop portion 222 is opposite to the position of the pre-tightening hole 230, so that when the pre-tightening member 240 and the adaptor 120 abut against each other, the pre-tightening member 240 provides a limiting force to the left along the X-axis in fig. 2 to the adaptor 120, and the stop portion 222 provides a force to the right along the X-axis in fig. 2 to the adaptor 120, so that the stability of the relative position between the tool shank 100 and the sleeve 200 is ensured by the effect of the two-side clamping.
The limiting portion 130 may be disposed in various manners, where the limiting portion 130 is formed by recessing an outer surface of the adapting portion 120, or the limiting portion 130 protrudes from an outer surface of the adapting portion 120.
When the limiting portion 130 is formed by recessing the outer surface of the adapting portion 120, the limiting portion 130 includes a first inner surface 131 and a second inner surface 132 disposed opposite to each other along the first direction, the first inner surface 131 is disposed between the mounting portion 110 and the second inner surface 132, and the second inner surface 132 is disposed in the clamping slot 221.
In these alternative embodiments, when the adaptor 120 is disposed in the mounting groove 220, the second inner surface 132 is clamped in the clamping groove 221, and the clamping groove 221 provides a force to the limiting portion 130 rightward along the X-axis in fig. 2, so as to ensure stability of the relative position between the tool shank 100 and the sleeve 200.
The second inner surface 132 may be disposed in a variety of ways, and the second inner surface 132 may extend along or be at an angle to the Y-axis in fig. 2. Preferably, the second inner surface 132 and the Y-axis in fig. 2 have an included angle, for example, the limiting portion 130 further includes a bottom surface 133 connecting the first inner surface 131 and the second inner surface 132, and the second inner surface 132 is disposed obliquely in a direction approaching the first inner surface 131 in a direction away from the bottom surface 133.
In these alternative embodiments, the second inner surface 132 is inclined, and when the second inner surface 132 and the clamping groove 221 are engaged with each other, the stopping portion 222 can also provide a stopping force in the Y direction in fig. 2 to the second inner surface 132 through the stopping action of the stopping portion 222, so as to further ensure the stability of the relative position between the tool shank 100 and the sleeve 200.
In addition, the height of the mounting groove 220 extending along the Y-axis in fig. 2 is not limited herein, and it is preferable that the stopper 222 and the inner wall of the mounting groove 220 on the side of the stopper 222 near the first end surface 211 are flush with the upper surface of the stopper 222, and the inner wall of the mounting groove 220 on the side of the stopper 222 near the second end surface 212 is flush with the lower surface of the stopper 222. When the limiting portion 130 is formed by recessing the surface of the adaptor portion 120, the stop portion 222 and a portion of the stop portion 222 near the first end surface 211 are located in the limiting portion 130, so that the adaptor portion 120 and the mounting groove 220 are more tightly matched. Wherein the upper surface of the stop portion 222 refers to the surface of the stop portion 222 above the Y-axis in fig. 2, and the lower surface refers to the surface of the stop portion 222 below the Y-axis in fig. 2.
When the limiting portion 130 protrudes from the outer surface of the adaptor portion 120, the limiting portion 130 includes a connecting end 134 and a free end 135 that are disposed opposite to each other, the limiting portion 130 is connected to the outer surface of the adaptor portion 120 through the connecting end 134, and the limiting portion 130 is disposed obliquely from the connecting end 134 to the free end 135 along a direction approaching the mounting portion 110.
In these alternative embodiments, the limiting portion 130 is disposed obliquely, and when the limiting portion 130 and the clamping groove 221 are matched with each other, the limiting portion 222 can provide a limiting force along the Y direction in fig. 2 to the second inner surface 132 through the limiting action of the limiting portion 222, so as to further ensure the stability of the relative position between the tool shank 100 and the sleeve 200.
The second embodiment of the present invention further provides a sleeve 200, which is the sleeve 200 according to any one of the first embodiment. The tool shank 100 can be inserted into a guide of a navigation system via the sleeve 200, so that a surgical knife can also be inserted into the guide. In some orthopedic operations, the guide of the navigation system finds the target position, and then the scalpel can be directly arranged on the guide through the scalpel handle 100 and the sleeve 200, so that the direct scalpel cutting is realized, the position error caused by visual measurement of the scalpel cutting by a doctor is avoided, and the precision of the scalpel cutting position can be effectively improved.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. For example, the algorithms described in particular embodiments may be modified without departing from the basic spirit of the invention. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. A tool shank assembly for cooperation with a guide, comprising:
the sleeve comprises two end faces oppositely arranged in a first direction and a mounting groove penetrating at least one end face and extending along the first direction, wherein the mounting groove is formed by enclosing wall parts, clamping grooves are formed in the inner surfaces of the wall parts, and the outer cylinder wall of the sleeve is provided with a matching part for matching with the guide; and
The knife handle comprises a mounting part and a switching part which are sequentially distributed along a first direction, wherein the mounting part is used for mounting a surgical knife, the surface of the switching part is provided with a limiting part which is matched with the clamping groove, the switching part can be arranged in the mounting groove of the sleeve so that the knife handle is connected with the sleeve,
Wherein, the sleeve still includes:
The pre-tightening hole is communicated with the mounting groove, and the mounting groove and the pre-tightening hole penetrate through the two end surfaces along the first direction;
the pre-tightening part is positioned in the pre-tightening hole, and the pre-tightening part and the switching part positioned in the mounting groove are mutually abutted;
the clamping groove faces to the opening of the mounting groove, a stop part is arranged at the opening of the mounting groove, the stop part is arranged at one side, far away from the pre-tightening hole, of the opening of the clamping groove, and the stop part shields part of the opening of the clamping groove.
2. The tool shank assembly of claim 1, wherein the mounting groove is U-shaped in cross section or is a counterbore through at least one of the end faces.
3. The tool shank assembly according to claim 1, wherein the clamping groove is formed by a recess in an inner surface of the wall portion or the clamping groove is disposed through the wall portion.
4. The tool shank assembly according to claim 1, wherein the limiting portion is formed by a surface recess of the adapter portion, and the limiting portion includes a first inner surface and a second inner surface disposed opposite along the first direction, the first inner surface being disposed between the mounting portion and the second inner surface, the second inner surface being disposed in the clamping groove.
5. The tool shank assembly according to claim 4, wherein the stop portion further comprises a bottom surface connecting the first inner surface and the second inner surface, the second inner surface being disposed obliquely in a direction away from the bottom surface in a direction toward the first inner surface.
6. The tool shank assembly according to claim 1, wherein the limiting portion protrudes from a surface of the adapter portion.
7. The tool shank assembly according to claim 6, wherein the limiting portion comprises a connecting end and a free end which are oppositely arranged, the limiting portion is connected to the outer surface of the switching portion through the connecting end, and the limiting portion is obliquely arranged from the connecting end to the free end in a direction approaching the mounting portion.
8. The tool shank assembly according to claim 1, wherein the adapter portion comprises a first side surface and a second side surface disposed opposite each other in a second direction, the first side surface conforming to an inner surface of the mounting groove, the adapter portion being disposed obliquely away from a stop surface of the mounting portion in a direction from the first side surface to the second side surface in a direction approaching the mounting portion, wherein the second direction intersects the first direction.
9. The tool handle assembly of claim 1, wherein the mating portion is an arcuate surface disposed on the outer wall of the sleeve or the mating portion is an elastic member disposed on the outer wall of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488322.XA CN109498157B (en) | 2018-12-06 | 2018-12-06 | Knife handle assembly and sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488322.XA CN109498157B (en) | 2018-12-06 | 2018-12-06 | Knife handle assembly and sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109498157A CN109498157A (en) | 2019-03-22 |
| CN109498157B true CN109498157B (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811488322.XA Active CN109498157B (en) | 2018-12-06 | 2018-12-06 | Knife handle assembly and sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109498157B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008015378U1 (en) * | 2007-11-12 | 2009-02-26 | Aesculap Ag | Scalpel or surgical knife |
| CN204909638U (en) * | 2015-06-03 | 2015-12-30 | 毛继凯 | Intelligence backbone surgical instruments robot |
| CN209713129U (en) * | 2018-12-06 | 2019-12-03 | 北京天智航医疗科技股份有限公司 | Knife handle component and sleeve |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620456A (en) * | 1995-10-20 | 1997-04-15 | Lasersurge, Inc. | Trocar assembly |
| WO1998034548A1 (en) * | 1997-02-07 | 1998-08-13 | Obagi Zein E | Scalpel with visual cutting monitoring aperture |
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| CN109498157A (en) | 2019-03-22 |
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