Directional assembly system for knife handle and knife head of ultrasonic osteotome

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a directional assembly system for a scalpel handle and a scalpel head of an ultrasonic osteotome, which comprises a scalpel handle shell, a transducer, a scalpel head calibration structure, a directional structure and a quick connector, the transducer is mounted in the knife handle shell, and the tip of the transducer extends out of the knife handle shell; the tool bit calibration structure is detachably connected with the tip end of the transducer, and the outer contour of the tool bit calibration structure is matched with the outer contour of the ultrasonic osteotome tool bit in shape; the orientation structure is connected to the outer side of the knife handle shell in a sleeving mode and surrounds the tip end of the transducer, a first groove and a second groove are formed in the orientation structure, the first groove is matched with the outer contour shape of the knife handle shell and limits the insertion angle of the knife handle shell, and the second groove is matched with the outer contour shape of the knife head calibration structure and limits the insertion angle of the knife handle shell. The second groove limits the insertion angle of the transducer; the quick connecting piece is fixedly connected with the cutter handle shell and detachably connected with the tail end of the mechanical arm. In this way, it can be ensured that the tool bits face the same direction every time the tool bits are replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a directional assembly system for an ultrasonic bone knife handle and a knife head. Background Art

[0002] The ultrasonic bone scalpel uses high-intensity focused ultrasound technology to convert electrical energy into mechanical energy through a transducer. Through high-frequency ultrasonic vibrations, the water in the contacted tissue cells is vaporized and the protein hydrogen bonds are broken, thereby completely destroying the bone tissue that needs to be cut during surgery. When in use, the temperature of the ultrasonic scalpel head is lower than 38°C and the surrounding propagation distance is less than 200 microns. Since this high-intensity focused ultrasound only has a destructive effect on bone tissue of a specific hardness, it will not only not damage blood vessels and nerve tissues, but also stop bleeding at the surgical wound, further reducing the incision of minimally invasive surgery, greatly improving the accuracy, reliability and safety of the surgery.

[0003] In modern society, with the development of medical technology, orthopedic surgery has become more diversified. Accordingly, when performing surgery, different shapes of surgical blades are needed to grind, scrape, clamp, and other operations on the affected area according to different orthopedic conditions. The ultrasonic bone knife includes a blade and a handle. When a blade of a different shape is needed for surgery, the blade needs to be removed from the handle and a new blade needs to be installed. However, each time the blade is replaced, due to manual installation, it is impossible to ensure that the new blade is in the same direction as the old blade, and the doctor often needs to manually turn the handle to adjust it, which is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the problems in the above-mentioned background technology and provide a directional assembly system for an ultrasonic bone knife handle and a knife head.

[0005] To achieve the above-mentioned purpose, the utility model provides a directional assembly system for an ultrasonic bone knife handle and a knife head, comprising:

[0006] Tool handle housing, transducer, tool head calibration structure, orientation structure and quick connector;

[0007] The transducer is installed in the handle housing, and the tip of the transducer extends out of the handle housing, and the tip is used for fixedly connecting the ultrasonic bone knife head;

[0008] The cutter head calibration structure is detachably connected to the tip of the transducer, and the outer contour of the cutter head calibration structure matches the outer contour of the ultrasonic bone knife cutter head;

[0009] The orientation structure is sleeved on the outside of the handle shell and surrounds the tip of the transducer. A first groove and a second groove are provided in the orientation structure. The first groove matches the outer contour of the handle shell and defines an insertion angle of the handle shell. The second groove matches the outer contour of the tool head calibration structure and defines an insertion angle of the transducer.

[0010] The quick connector is fixedly connected to the tool handle housing, and the quick connector is detachably connected to the end of the mechanical arm.

[0011] Preferably, a first limiting structure is provided on the outer wall of the handle housing, and a second limiting structure is provided on the inner wall of the first groove, and the first limiting structure and the second limiting structure are matched in shape;

[0012] The handle shell is inserted into the orientation structure, and the first limiting structure and the second limiting structure are correspondingly arranged to limit the insertion angle of the handle shell.

[0013] Preferably, the first limiting structure is arranged as a straight surface on the side wall of the handle housing, and the remaining part of the side wall of the handle housing is an arc surface;

[0014] The second limiting structure is configured as a straight surface on the inner wall of the first groove, and the remaining portion of the inner wall of the first groove is an arc-shaped surface.

[0015] Preferably, two of the first limiting structures are provided, and an angle is formed between the two first limiting structures.

[0016] Preferably, the second groove is arranged at the center of the first groove, and the second groove extends in a direction away from the insertion end of the first groove;

[0017] The side wall of the second groove in the length direction is parallel to the symmetry line between the two second limiting structures.

[0018] Preferably, the quick connector is welded to the handle housing, and the welding points are respectively on the two first limiting structures.

[0019] Preferably, the handle housing comprises a front housing and a rear housing, the transducer is installed in the front housing, and the rear housing is installed with the front housing to limit the displacement of the transducer.

[0020] To achieve the above-mentioned purpose, the directional assembly system of the utility model further comprises a press-fitting component sleeved on the tail housing;

[0021] The press-fitting component is used for press-fitting and assembling the front housing and the rear housing.

[0022] Preferably, one end of the transducer away from the tip is connected to a water pipe and a power cord, and the press-fit component is provided with a through hole, and the water pipe and the power cord pass through the press-fit component through the through hole and extend to the outside of the press-fit component.

[0023] Preferably, the transducer is fixedly connected to the handle housing via a flexible connector.

[0024] Based on this, the beneficial effects of the utility model are:

[0025] 1. Through the scheme of the utility model, the first groove and the second groove are arranged on the directional structure, the first groove matches the outer contour of the handle shell, and the second groove matches the outer contour of the blade head, so that when the handle shell is inserted into the first groove and the blade head calibration structure on the tip of the transducer is inserted into the second groove, the orientation of the handle shell and the blade head has a fixed installation angle. At the same time, a quick connector is welded on the handle shell, and the other end of the quick connector is detachably connected to the end of the mechanical arm, so that the installation angle of the handle shell and the mechanical arm is fixed, so that after the handle is disassembled from the mechanical arm to replace the blade head, when it is installed to the mechanical arm again, the orientation of the blade head is consistent, and there is no need to replace the blade head. The doctor manually rotates the angle between the handle and the mechanical arm to adjust the orientation of the blade head;

[0026] 2. Through the scheme of the utility model, two first limiting structures are provided on the handle shell, an angle is formed between the two first limiting structures, the second groove is provided at the center of the first groove, and the side wall of the second groove in the length direction is parallel to the symmetry line between the two first limiting structures, so that when the cutter head is installed to the handle, the direction of the cutter head is parallel to the symmetry line between the two first limiting structures on the handle shell. At the same time, the quick connector is welded to the two first limiting structures. When it is installed on the robot arm, the initial state of the cutter head direction is vertical, the cutting direction is smooth, and it is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram schematically shows the structure of a directional assembly system according to one embodiment of the utility model;

[0028] Figure 2 A schematic diagram schematically shows the structure of a handle housing according to an embodiment of the utility model;

[0029] Figure 3 A schematic diagram schematically showing the structure of a transducer according to an embodiment of the utility model;

[0030] Figure 4 A side view schematically showing an orientation structure of an embodiment of the utility model;

[0031] Figure 5A schematic diagram schematically showing the welding of a handle housing and a quick connector according to an embodiment of the utility model;

[0032] Explanation of the reference numerals: handle housing 10 , first limiting structure 101 , front housing 102 , rear housing 103 , transducer 20 , tip 201 , tool head calibration structure 30 , orientation structure 40 , first groove 401 , second limiting structure 4011 , second groove 402 , quick connector 50 , press-fit component 60 . DETAILED DESCRIPTION

[0033] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0034] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0035] Figure 1 A schematic diagram schematically shows the structure of a directional assembly system according to an embodiment of the utility model. Figure 2 A schematic diagram schematically shows the structure of a handle housing according to an embodiment of the utility model. Figure 3 A schematic diagram schematically shows the structure of a transducer according to an embodiment of the utility model. Figure 4 A side view schematically showing an orientation structure of an embodiment of the utility model, Figure 5 A schematic diagram schematically shows the welding of a handle housing and a quick connector according to an embodiment of the utility model, as shown in FIG. Figure 5 As shown, Figure 1-5 As shown, the utility model provides a directional assembly system for an ultrasonic bone knife handle and a knife head, comprising:

[0036] A tool handle housing 10, a transducer 20, a tool head calibration structure 30, an orientation structure 40 and a quick connector 50;

[0037] The transducer 20 is installed in the handle housing 10, and the tip 201 of the transducer 20 extends out of the handle body 10, the tip calibration structure 30 is detachably connected to the tip 201 of the transducer 20, and the outer contour of the blade marking structure 40 matches the outer contour of the ultrasonic bone knife blade;

[0038] The orientation structure 40 is sleeved on the outside of the handle housing 10 and surrounds the tip 201 of the transducer 20. A first groove 401 and a second groove 402 are provided in the orientation structure 40. The first groove 401 matches the outer contour of the handle housing 10. The first groove 401 defines the insertion direction of the handle housing 10. The second groove 402 matches the outer contour of the tool head calibration structure 30. The second groove 402 defines the insertion direction of the tool head calibration structure 30 on the tip 201.

[0039] The quick connector 50 is fixedly connected to the tool handle housing 10 , and the quick connector 50 is detachably connected to the end of the robot arm.

[0040] Specifically, the handle housing 10 is hollow inside, the transducer 20 is inserted into the handle housing 10, and is sealed and fixedly connected to the handle housing 10 through soft connectors such as silicone rings, insulating gaskets, and the like.

[0041] The transducer 20 includes a horn and a piezoelectric sheet arranged thereon. The number of the piezoelectric sheets is set to four and is mounted on the horn. The piezoelectric sheets are piezoelectric ceramics.

[0042] One end of the amplitude transformer is connected to the ultrasonic bone knife head, and the other end is connected to the water pipe, so that water can be directed to the knife head for cooling after work; when power is turned on, the piezoelectric sheet can convert electrical energy into mechanical energy, which is amplified and coupled by the amplitude transformer, causing the knife head to vibrate and work.

[0043] The outer contour of the tool head calibration structure 30 matches the shape of the tool head. It can be installed on the tip 201 of the transducer 20 instead of the tool head in the initial stage, so that the tip 201 of the transducer 20 can be inserted into the second groove 402 with a fixed direction, which facilitates the directional installation of the transducer 20 and the tool handle housing 10.

[0044] The orientation structure 40 is provided with a first groove 401 and a second groove 402. The first groove 401 matches the outer contour of the handle housing 10, and the second groove 402 matches the outer contour of the tool head calibration structure 30. When the handle housing 10 is inserted into the orientation structure 40, the handle housing 10 is inserted into the first groove 401 at a fixed angle due to the shape matching between the first groove 401 and the handle housing 10.

[0045] At the same time, when the transducer 20 is inserted into the tool handle shell 10, its tip 201 enters the orientation structure 40. Due to the setting of the second groove 402 and the tool head calibration structure 30 on the tip 201, the transducer 20 will be inserted into the second groove 402 at a fixed angle, so that the transducer 20 is installed with the tool handle shell 10 at a fixed angle.

[0046] A quick connector 50 is fixedly connected to the outer wall of the handle shell 10, one end of which is fixedly connected to the handle shell 10, and the other end is detachably connected to the end of the robotic arm. When the blade head needs to be replaced, the handle shell 10 needs to be disassembled from the end of the robotic arm for replacement. Since the transducer 20 and the handle shell 10 are fixedly installed through the directional structure 40, after the new blade head is installed, it has the same blade head orientation as the old blade head when installed with the handle shell 10. At the same time, when the handle shell 10 is installed with the end of the robotic arm again, due to the setting of the quick connector 50, the handle shell 10 still has the installation angle when it is not disassembled, thereby ensuring that the orientation of the new blade head is consistent with the orientation of the old blade head, avoiding the problem of inconsistent blade head orientation after installation, which requires manual adjustment by the doctor.

[0047] Furthermore, a first limiting structure 101 is disposed on the outer wall of the handle housing 10, and a second limiting structure 4011 is disposed on the inner wall of the first groove 401, and the first limiting structure 101 and the second limiting structure 4011 are matched in shape;

[0048] The handle housing 10 is inserted into the orientation structure 40 , and the first limiting structure 101 and the second limiting structure 4011 are correspondingly arranged to limit the insertion angle of the handle housing 10 .

[0049] Specifically, the first limiting structure 101 is set as a flat surface on the side wall of the handle housing 10, and the remaining part of the side wall of the handle housing 10 is an arc surface;

[0050] The second limiting structure 4011 is configured as a flat surface on the inner wall of the first groove 401 , and the remaining portion of the inner wall of the first groove 401 is an arc-shaped surface.

[0051] When the handle shell 10 is inserted into the first groove 401, only when the first limiting structure 101 and the second limiting structure 4011 are set correspondingly can the handle shell 10 be inserted into the first groove 401, and after insertion, the junction of the straight surface and the curved surface will also restrict each other's movement, so that the handle shell 10 will not rotate in the first groove 401, so that the handle shell 10 and the directional structure 40 have a fixed insertion angle.

[0052] At the same time, the first limiting structure 101 can also be set as a raised structure, such as a bump, and a third groove is set on the second limiting structure 4011, and the bump and the third groove match each other. When the handle shell 10 is inserted into the first groove 401, the bump and the third groove are set correspondingly, and the side wall of the third groove will also limit the movement of the bump, thereby ensuring that the handle shell 10 is inserted into the first groove 401 at a fixed angle.

[0053] Furthermore, two first limiting structures 101 are provided, and an angle is formed between the two first limiting structures 101 .

[0054] The second groove 402 is disposed at the center of the first groove 401 , and the second groove 402 extends in a direction away from the insertion end of the first groove 401 ;

[0055] The sidewall of the second groove 402 in the length direction is parallel to the symmetry line between the two second limiting structures 4011 .

[0056] Specifically, the first limiting structure 101 and the second limiting structure 4011 are arranged correspondingly. When two first limiting structures 101 are arranged and an angle is formed between the two, the second limiting structures 4011 on the first groove 401 have the same structural arrangement.

[0057] The second groove 402 is arranged at the center of the first groove 401, and the side wall of the second groove 402 in the length direction is parallel to the symmetry line of the two second limiting structures 4011, so that when the transducer 20 is installed with the handle housing 10, the direction of the blade on the transducer 20 can be parallel to the symmetry line between the two second limiting structures 4011. In this way, when the two second limiting structures 4011 are held, the cutting direction of the blade is the direction of the symmetry line of the two second limiting structures 4011, and it is smooth to use.

[0058] Since the shape of the blade is similar to a rectangle when viewed from the side, it has a longer side and a shorter side, so the side wall of the second groove 402 in the length direction is the longer side of the blade, and the tip of the blade is located on the shorter side, so its cutting direction is parallel to the longer side.

[0059] Furthermore, the quick connector 50 is welded to the handle housing 10 , and the welding points are respectively on the two first limiting structures 101 .

[0060] Specifically, the quick connector 50 has a welding end 501 and a connecting end 502, the welding end 501 is welded to the handle housing 10, and the connecting end 502 is detachably connected to the end of the robot arm, and the welding end 501 and the connecting end 502 are respectively located at two ends of the quick connector 50;

[0061] The welding end 501 is arranged to half surround the handle housing 10. When the handle housing 10 and the quick connector 50 are installed, the welding end 501 of the quick connector 50 can support the handle housing 10 in all directions. When the quick connector 50 and the end of the robot arm are installed, when the robot arm operates the handle housing 10 to move, it is not easy for the quick connector 50 to be separated from the handle housing 10.

[0062] At the same time, the welding point of the welding end 501 is set on the two first limiting structures 101, so that when the handle shell 10 is installed on the robot arm through the quick connector 50, the initial orientation of the cutter head is vertical, which is convenient for use.

[0063] Furthermore, the handle housing 10 includes a front housing 102 and a rear housing 103, the transducer 20 is installed in the front housing 102, and the first limiting structure 101 is arranged on the side wall of the front housing 102;

[0064] The tail shell 103 is installed with the front shell 102 to limit the displacement of the transducer 20. With this arrangement, after the transducer 20 is inserted into the front shell 102 and rotated at an angle so that the tip 201 can be inserted into the second groove 402, the tail shell 103 is installed with the front shell 102 to form the entire handle shell 10. At the same time, the transducer 20 is also enclosed in the handle shell 10 to prevent the transducer 20 from falling.

[0065] Furthermore, the directional assembly system of the present invention further includes a press-fit component 60 sleeved on the tail housing 103;

[0066] After the tail shell 103 and the front shell 102 are installed, the press-fit component 60 is sleeved on the tail shell 103 through a crimping process, so that the tail shell 103 and the front shell 102 are firmly connected to avoid vibration of the transducer 20 during operation, which may cause the connection between the tail shell 103 and the front shell 102 to be disconnected, causing the transducer 20 to fall.

[0067] The end of the transducer 20 away from the tip 201 is connected to a water pipe and a power cord, and a through hole is provided on the press-fit component 60. Both the water pipe and the power cord can pass through the press-fit component 60 through the through hole to communicate with the outside world. When the press-fit component 60 is sleeved on the handle shell 10 and the front shell 102 and the rear shell 103 are installed, the transducer 20 in the shell can still be connected to the water pipe and the power cord.

[0068] In summary, through the scheme of the utility model, the first groove 401 and the second groove 402 are arranged on the orientation structure 40, the first groove 401 matches the outer contour of the handle shell 10, and the second groove 402 matches the outer contour of the cutter head, so that when the handle shell 10 is inserted into the first groove 401 and the cutter head calibration structure 30 on the tip 201 of the transducer 20 is inserted into the second groove 402, the orientation of the handle shell 10 and the cutter head has a fixed installation angle. At the same time, a quick connector 50 is welded on the handle shell 10, and the other end of the quick connector 50 is detachably connected to the end of the robotic arm, so that the installation angle of the handle shell 10 and the robotic arm is fixed, so that after the handle is disassembled from the robotic arm to replace the cutter head, when it is installed to the robotic arm again, the orientation of the cutter head is consistent, and there is no need to replace the cutter head. The doctor manually rotates the angle between the handle and the robotic arm to adjust the orientation of the cutter head;

[0069] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

[0070] It should be understood that the size of the serial numbers of the steps in the utility model content and embodiments of the present application does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A directional assembly system for an ultrasonic bone knife handle and a knife head, characterized in that: include: Tool handle housing, transducer, tool head calibration structure, orientation structure and quick connector; The transducer is installed in the handle housing, and the tip of the transducer extends out of the handle housing, and the tip is used for fixedly connecting the ultrasonic bone knife head; The cutter head calibration structure is detachably connected to the tip of the transducer, and the outer contour of the cutter head calibration structure matches the outer contour of the ultrasonic bone knife cutter head; The orientation structure is sleeved on the outside of the handle shell and surrounds the tip of the transducer. A first groove and a second groove are provided in the orientation structure. The first groove matches the outer contour of the handle shell and defines an insertion angle of the handle shell. The second groove matches the outer contour of the tool head calibration structure and defines an insertion angle of the transducer. The quick connector is fixedly connected to the tool handle housing, and the quick connector is detachably connected to the end of the mechanical arm.

2. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 1, characterized in that: A first limiting structure is arranged on the outer wall of the handle housing, and a second limiting structure is arranged on the inner wall of the first groove, and the first limiting structure and the second limiting structure are matched in shape; The handle shell is inserted into the orientation structure, and the first limiting structure and the second limiting structure are correspondingly arranged to limit the insertion angle of the handle shell.

3. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 2, characterized in that: The first limiting structure is set as a flat surface on the side wall of the handle shell, and the remaining part of the side wall of the handle shell is an arc surface; The second limiting structure is configured as a straight surface on the inner wall of the first groove, and the remaining portion of the inner wall of the first groove is an arc-shaped surface.

4. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 3, characterized in that: The number of the first limiting structures is two, and an angle is formed between the two first limiting structures.

5. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 4, characterized in that: The second groove is arranged at the center of the first groove, and the second groove extends in a direction away from the insertion end of the first groove; The side wall of the second groove in the length direction is parallel to the symmetry line between the two second limiting structures.

6. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 5, characterized in that: The quick connector is welded to the handle housing, and the welding points are respectively on the two first limiting structures.

7. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 1, characterized in that: The handle housing comprises a front housing and a rear housing, the transducer is installed in the front housing, and the rear housing is installed with the front housing to limit the displacement of the transducer.

8. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 7, characterized in that: It also includes a press-fit component that is sleeved on the tail housing; The press-fitting component is used for press-fitting and assembling the front housing and the rear housing.

9. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 8, characterized in that: One end of the transducer away from the tip is connected with a water pipe and a power line, and the press-fit component is provided with a through hole. The water pipe and the power line pass through the press-fit component through the through hole and extend to the outside of the press-fit component.

10. The directional assembly system of the ultrasonic bone knife handle and the knife head according to claim 1, characterized in that: The transducer is fixedly connected to the handle housing via a flexible connector.

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