Ultrasonic knife instrument box

Abstract

The utility model relates to the field of medical instruments, and discloses an ultrasonic knife instrument box. The ultrasonic knife instrument box comprises a base, a first receding hole is formed in the base, the ultrasonic knife instrument box further comprises an ultrasonic knife device arranged in the first receding hole in a penetrating mode, and the ultrasonic knife device comprises a waveguide rod, an inner pipe arranged on the periphery of the waveguide rod in a sleeved mode and an outer pipe arranged on the periphery of the inner pipe in a sleeved mode. The waveguide rod, the inner pipe and the outer pipe are fixedly connected in the circumferential direction through a pin shaft which is arranged in a radial penetrating mode, and the first receding hole can limit the pin shaft in the radial direction of the outer pipe and prevent the pin shaft from moving in the radial direction of the outer pipe to be separated from the ultrasonic knife device; the pin shaft and the first receding hole are correspondingly arranged, the pin shaft is limited, the pin shaft is prevented from being disengaged from the ultrasonic knife device in the radial direction of the outer tube, and the safety and stability of the ultrasonic knife device in the using process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an ultrasonic knife instrument box. Background Art

[0002] Minimally invasive surgery refers to a surgical method that uses modern medical instruments such as laparoscopes and thoracoscopes and related equipment to perform surgery inside the human body cavity. Compared with traditional surgical methods, minimally invasive surgery has the advantages of less trauma, less pain, and faster recovery. However, due to the limitation of the size of the incision, the difficulty of minimally invasive instruments in minimally invasive surgery is greatly increased, and the fatigue and trembling of doctors during long operations will be magnified, which has become a key factor restricting the development of minimally invasive surgical technology. With the development of robotics technology, a new technology in the field of minimally invasive medicine that can overcome shortcomings and inherit advantages has emerged - minimally invasive surgical robot technology.

[0003] A common minimally invasive surgical robot consists of a doctor's console, a patient surgical platform and a display device. The surgeon operates an input device on the doctor's console and transmits the input to the patient surgical platform connected to the remotely operated surgical instrument.

[0004] Ultrasonic scalpel is a high-frequency electrosurgical device, mainly used for cutting biological tissues and closing blood vessels. It has the characteristics of less bleeding, less damage to surrounding tissues, and quick recovery after surgery. It acts on human tissues to cut and close them without causing side effects such as tissue drying and burns. When the blade is working, no current passes through the human body. It is widely used in operating rooms and is known as a bloodless scalpel.

[0005] In robot-assisted minimally invasive surgery, the application of combining ultrasonic scalpels with surgical robots is becoming more and more widespread.

[0006] In order to make the ultrasonic scalpel better adapt to the minimally invasive surgical robot, an adaptive instrument box design is required. The blade head is connected to the robotic arm of the surgical robot through the instrument box and transducer, and is transmitted through the transmission structure in the instrument box, so that the blade head switches between opening, closing, and rotating to complete the surgical action. Considering the load of the robotic arm and the safety and stability of the medical device, higher requirements are put forward for the instrument box. It is urgent to develop an ultrasonic scalpel adapter instrument box with simple structure, stable performance and high safety factor. Utility Model Content

[0007] The utility model aims to provide an ultrasonic scalpel instrument box, which has a simple structure, stable performance and high safety factor.

[0008] In order to solve the above technical problems, the implementation method of the utility model provides a technical solution as follows:

[0009] An ultrasonic scalpel instrument box comprises a base, a first clearance hole is provided on the base, and an ultrasonic scalpel device is inserted into the first clearance hole; the ultrasonic scalpel device comprises a waveguide rod, an inner tube sleeved on the outer periphery of the waveguide rod, and an outer tube sleeved on the outer periphery of the inner tube, and the waveguide rod, the inner tube and the outer tube are circumferentially fixedly connected by a pin shaft radially inserted therethrough; the first clearance hole can limit the pin shaft along the radial direction of the outer tube, and prevent the pin shaft from moving radially from the outer tube and detaching from the ultrasonic scalpel device. By arranging the pin shaft and the first clearance hole in correspondence, the pin shaft is limited, and the pin shaft is prevented from detaching from the ultrasonic scalpel device along the radial direction of the outer tube, thereby ensuring the safety and stability of the ultrasonic scalpel device during use.

[0010] Furthermore, the inner tube is provided with a second axial hole for the pin to pass through, the second axial hole is an oblong hole arranged along the axial direction of the inner tube, and the pin can be displaced along the axial direction of the inner tube relative to the second axial hole. The second axial hole is arranged so that the inner tube can be displaced along the axial direction relative to the waveguide rod and the outer tube, thereby controlling the ultrasonic blade at the end of the instrument.

[0011] Furthermore, it also includes a first transmission member and a bearing that are rotatably mounted and fixed on the periphery of the ultrasonic knife device. Through the cooperation of the first transmission member and the external power device, the ultrasonic knife device can obtain a stable circumferential force to cooperate with the use of the ultrasonic knife head.

[0012] Furthermore, the connection method between the first transmission member and the ultrasonic knife device includes an interference fit or a connection through a pin shaft; the bearing is sleeved on the first transmission member or the ultrasonic knife device.

[0013] Furthermore, a first slot is provided at a position corresponding to the first clearance hole and the pin shaft, the first slot is sleeved on the periphery of the outer tube, and the side wall of the first slot is used to limit the pin shaft along the radial direction of the outer tube; a second slot is provided at a position corresponding to the first clearance hole and the first transmission member, and a gap is provided between the second slot and the first transmission member; a third slot is provided at a position corresponding to the first clearance hole and the bearing, and the third slot is tightly matched with the bearing. Through the design of the first slot, the pin shaft can be limited to prevent the pin shaft from detaching from the ultrasonic knife device, and through the design of the third slot, the bearing is effectively supported. At the same time, the layout design of the first slot, the second slot, and the third slot is conducive to reducing the axial layout distance of the ultrasonic knife device, which is conducive to the miniaturization design of the ultrasonic knife instrument box.

[0014] Furthermore, it also includes a second transmission member that can move up and down, and the second transmission member is fixedly connected to the inner tube. Through the cooperation between the second transmission member and the external power input device, the axial force can be transmitted to the inner tube, driving the axial displacement of the inner tube.

[0015] Furthermore, a connector is fixedly provided at one end of the waveguide rod, and the connector is a screw rod, and the waveguide rod is detachably connected to the transducer via the connector. The design of the threaded connector enables the waveguide rod and the transducer to be quickly installed and disassembled.

[0016] Furthermore, it also includes a cover plate, which is fixed on the base, and a second clearance hole is provided on the cover plate, and the transducer is plugged and fixed to the cover plate through the second clearance hole.

[0017] Furthermore, the first transmission member is a gear member, and the gear member is also provided with an integrally connected sleeve, and the sleeve is sleeved and fixed on the periphery of the outer tube. Through the design of the sleeve, the contact area between the first transmission member and the ultrasonic knife device is increased, and the driving stability is improved.

[0018] Furthermore, a fourth axial hole is radially provided on the sleeve, and the pin is inserted into the fourth axial hole, so that the sleeve is circumferentially fixedly connected with the outer tube, the inner tube, and the waveguide rod. The design of the fourth axial hole is conducive to the installation of the pin and the stability of the ultrasonic knife device during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 This is a schematic diagram of the overall structure of an ultrasonic knife instrument box after installing a transducer in one embodiment of the utility model;

[0021] Figure 2 It is a partially omitted schematic diagram of an ultrasonic knife instrument box and a transducer after being combined in one embodiment of the utility model;

[0022] Figure 3 Yes Figure 2 Middle AA section view;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of an ultrasonic knife device in one embodiment of the utility model;

[0024] Figure 5 This is a front view of an ultrasonic knife device in one embodiment of the utility model;

[0025] Figure 6 Yes Figure 5 Middle BB section view;

[0026] Figure 7It is a three-dimensional schematic diagram of the assembly structure of the waveguide rod, inner tube, pin shaft and connecting piece in one embodiment of the utility model;

[0027] Figure 8 This is a front view of the assembly structure of the waveguide rod, inner tube, pin shaft and connector in one embodiment of the utility model;

[0028] Fig. 9 Yes Figure 8 Middle CC section view;

[0029] Fig.10 This is a schematic diagram of the structure of the first transmission member in one embodiment of the utility model;

[0030] Fig.11 This is a schematic diagram of the three-dimensional structure of the base in one embodiment of the utility model;

[0031] Fig.12 is a top view of a base in one embodiment of the utility model;

[0032] Fig.13 Yes Fig.12 Middle DD section view.

[0033] Explanation of the reference numerals: 1. instrument box; 2. transducer; 10. base; 20. cover plate; 200. second clearance hole; 100. first clearance hole; 101. first slot; 102. second slot; 103. third slot; 30. waveguide rod; 301. connector; 300. pin; 310. first axial hole; 40. inner tube; 410. second axial hole; 50. outer tube; 510. third axial hole; 60. sleeve; 610. fourth axial hole; 70. first transmission member; 80. bearing; 90. second transmission member. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0035] like Figure 1-13In one embodiment provided by the utility model, an ultrasonic knife instrument box 1 comprises a base 10, and a cover plate 20 covering the base 10, wherein the base 10 is provided with a first clearance hole 100, and the cover plate 20 is provided with a second clearance hole 200 corresponding to the first clearance hole 100, and the ultrasonic knife device is penetrated on the base 10 through the first clearance hole 100; the ultrasonic knife device comprises a waveguide rod 30, an inner tube 40 sleeved on the outer periphery of the waveguide rod 30, and an outer tube 50 sleeved on the outer periphery of the inner tube 40, wherein the waveguide rod 30, the inner tube 40 and the outer tube 50 are circumferentially fixedly connected by a pin shaft 300 penetrated along the radial direction thereof, and the first clearance hole 100 can limit the pin shaft 300 along the radial direction of the outer tube 50, and prevent the pin shaft 300 from moving radially along the outer tube 50 and detaching from the ultrasonic knife device.

[0036] One end of the ultrasonic knife device is fixedly connected to the transducer 2 , and the other end extends in a direction away from the transducer 2 . The transducer 2 is plugged and fixed on the cover plate 20 through the second clearance hole 200 .

[0037] like Figure 1-3 As shown, in one embodiment, the waveguide rod 30 is slender, one end of the waveguide rod 30 is fixedly connected to the transducer 2, the other end of the waveguide rod 30 passes through the first clearance hole 100 and extends in the direction away from the transducer 2, and an ultrasonic blade is provided at the end thereof. A connecting member 301 is fixedly provided at one end of the waveguide rod 30 facing the transducer 2, and the connecting member 301 is a rod-shaped object with an external thread. The waveguide rod 30 is threadedly connected to the transducer 2 through a connector to form a detachable fixed connection relationship to facilitate the disassembly and replacement of the waveguide rod 30.

[0038] like Figure 7-9 As shown, in one embodiment, the outer periphery of the waveguide rod 30 is provided with an inner tube 40, the waveguide rod 30 is provided with a first axial hole 310 in the radial direction, the inner tube 40 is provided with two second axial holes 410 in the radial direction at positions corresponding to the first axial hole 310, the second axial holes 410 are oblong holes, the oblong holes are provided on the peripheral wall of the inner tube 40 along the axial direction of the inner tube 40, that is, the major axis direction of the oblong holes is consistent with the axial direction of the inner tube 40. A pin 300 is inserted into the first axial hole 310 and the second axial hole 410, so that a circumferentially fixed connection relationship is formed between the inner tube 40 and the waveguide rod 30, that is, when the inner tube 40 and the waveguide rod 30 rotate with the central axis as the rotation axis, the inner tube 40 and the waveguide rod 30 rotate synchronously under the circumferential limiting action of the pin 300. The second shaft hole 410 is an oblong hole, and the pin shaft 300 can move relatively along the long axis direction in the second shaft hole 410 . Therefore, the inner tube 40 can move relative to the waveguide rod 30 along its axial direction.

[0039] As shown in Figures 4-6, the waveguide rod 30 is provided with a first axial hole 310 extending through it in a radial direction, and the inner tube 40 is provided with two second axial holes 410 at a position corresponding to the first axial hole 310, and the second axial hole 410 is an oblong hole, and the major axis of the oblong hole is arranged along the axial direction of the inner tube 40, and the outer tube 50 is provided with two third axial holes 510 at a position corresponding to the first axial hole 310, and the pin 300 is penetrated in the first axial hole 310, the second axial hole 410, and the third axial hole 510, so as to fix the waveguide rod 30, the inner tube 40, and the outer tube 50 in the circumferential direction and limit the relative rotation therebetween, and the waveguide rod 30, the inner tube 40, and the outer tube 50 are circumferentially fixedly connected by the pin 300 to realize synchronous rotation, and when the outer tube 50 rotates, it can drive the inner tube 40 and the waveguide rod 30 to rotate synchronously. The diameters of the first axial hole 310 and the third axial hole 510 are adapted to the cross-sectional diameter of the pin shaft 300. The second axial hole 410 is an oblong hole arranged along the axial direction of the inner tube 40, so that the pin shaft 300 can slide in the first axial hole 310 along the axial direction of the inner tube 40. Therefore, the inner tube 40 can be axially displaced relative to the waveguide rod 30 and the outer tube 50 to facilitate the control of the opening and closing angle of the ultrasonic blade at the end of the instrument.

[0040] In one embodiment, a first transmission member 70 is coaxially fixed on the outer circumference of the outer tube 50. The first transmission member 70 can cooperate with an external power device to transmit power and drive the outer tube 50 to rotate. Preferably, the first transmission member 70 is a gear member. The first transmission member 70 and the external power device drive the outer tube 50 to rotate through meshing transmission, thereby driving the waveguide rod 30 and the inner tube 40 to rotate synchronously. The fixed connection method between the first transmission member and the ultrasonic knife device can be implemented by means in the prior art, such as interference sleeve or connection through a pin shaft.

[0041] In one embodiment, a second transmission member 90 is fixedly sleeved on one end of the inner tube 40 facing the second clearance hole 200. The second transmission member 90 can be displaced along its axial direction under the drive of an external power device. When the second transmission member 90 is displaced along its axial direction, it can drive the inner tube 40 to axially displace relative to the waveguide rod 30, thereby realizing the control of the opening and closing angle of the ultrasonic blade head.

[0042] In one embodiment, a bearing 80 is coaxially sleeved on the outer tube 50. The bearing 80 and the first transmission member 70 are arranged adjacent to each other on the side close to the cover plate 20. The bearing 80 and the pin shaft 300 are respectively located on both sides of the first transmission member 70. Preferably, there is one bearing 80, which is beneficial to reducing the axial distribution distance of the transmission member and the bearing 80, and is beneficial to the miniaturization and lightweight production of the ultrasonic knife instrument box 1.

[0043] like Figure 11-13As shown, in one embodiment, a first clamping groove 101 is provided at a position corresponding to the first clearance hole 100 and the pin shaft 300. The diameter of the cross section of the first clamping groove 101 is slightly larger than the diameter of the outer tube 50. The gap between the side wall of the first clamping groove 101 and the outer tube 50 is used to ensure that the outer tube 50 can rotate freely relative to the first clamping groove 101. During the rotation of the ultrasonic knife device, the pin shaft 300 is at risk of detaching from the first shaft hole 310, the second shaft hole 410, and the third shaft hole 510 under the action of centrifugal force. The side wall of the first clamping groove 101 can limit and fix the pin shaft 300 in the first shaft hole 310, the second shaft hole 410, and the third shaft hole 510, so as to prevent the outer tube 50 from rotating freely relative to the first clamping groove 101. And it can ensure the stability of the waveguide rod 30, the inner tube 40 and the outer tube 50 when they rotate synchronously; the first clearance hole 100 is provided with a second clamping groove 102 at the position corresponding to the first transmission member 70, and a gap is provided between the second clamping groove 102 and the first transmission member 70, and the first transmission member 70 can rotate freely relative to the second clamping groove 102, and the first clearance hole 100 is provided with a third clamping groove 103 at the position corresponding to the bearing 80, and the third clamping groove 103 is tightly fitted with the bearing 80, and the bearing 80 plays a role of radial support for the outer tube 50, which can prevent the first transmission member 70 from bending and deforming due to radial force when driving the outer tube 50 to rotate.

[0044] like Figure 4-6As shown in Figure 10, in one embodiment, the first transmission member 70 is a gear member, and the gear member is further provided with an integrally connected sleeve 60, the sleeve 60 is sleeved on the outer periphery of the outer tube 50, the sleeve 60 is fixedly connected to the outer tube 50, and the sleeve is provided with a fourth shaft hole 610 at a position corresponding to the first shaft hole 310, and the pin 300 is inserted into the first shaft hole 310, the second shaft hole 410, the third shaft hole 510, and the fourth shaft hole 610, so as to fix the waveguide rod 30, the inner tube 40, the outer tube 50 and the sleeve 60 in the circumferential direction. The first transmission member 70 can cooperate with the external power device to transmit power, so as to drive the sleeve 60 to rotate, and then drive the waveguide rod 30, the inner tube 40, and the outer tube 50 to rotate synchronously, and the first transmission member 70 and the external power device drive the sleeve 60 to rotate through meshing transmission. Through the design of the sleeve, the contact area between the first transmission member and the ultrasonic knife device is increased, and the driving stability is improved. The sleeve 60 is coaxially sleeved with a bearing 80, and the bearing 80 is arranged at one end of the sleeve 60 close to the cover plate 20. The bearing 80 and the pin 300 are respectively located at the two ends of the first transmission member 70. Preferably, there is one bearing 80. A first slot 101 is provided at a position corresponding to the first clearance hole 100 and the pin 300. The diameter of the cross section is slightly larger than the diameter of the sleeve 60. The gap between the side wall of the first slot 101 and the outer tube 50 is used to ensure that the sleeve 60 can rotate freely relative to the first slot 101. During the rotation of the ultrasonic knife device, the pin 300 is at risk of detaching from the first shaft hole 310, the second shaft hole 410, the third shaft hole 510, and the fourth shaft hole 610 under the action of centrifugal force. The side wall of the first slot 101 can limit and fix the pin 300 in the first shaft hole 310, the second shaft hole 410, the third shaft hole 510, and the fourth shaft hole 610. , so as to ensure the stability of synchronous rotation of the waveguide rod 30, the inner tube 40, the outer tube 50, and the sleeve 60; the first clearance hole 100 is provided with a second slot 102 at the position corresponding to the first transmission member 70, and a gap is provided between the second slot 102 and the first transmission member 70, and the first transmission member 70 can rotate freely relative to the second slot 102, and the first clearance hole 100 is provided with a third slot 103 at the position corresponding to the bearing 80, and the third slot 103 and the bearing 80 are tightly matched, and the bearing 80 plays a role of radial support for the outer tube 50, which can prevent the outer tube 50 from bending and deforming due to radial force when rotating. The fixed connection method of the first transmission member and the ultrasonic knife device can be implemented by means in the prior art, such as interference sleeve or connection through a pin shaft.

[0045] The ultrasonic knife instrument box provided by the utility model ensures that the ultrasonic knife device can realize synchronous rotation by inserting the ultrasonic knife device on the base and circumferentially fixing the waveguide rod, the inner tube and the outer tube through the pin shaft, and at the same time, the pin shaft is set corresponding to the first clearance hole, and the pin shaft is limited to prevent the pin shaft from detaching from the ultrasonic knife device along the radial direction of the outer tube, thereby ensuring the safety and stability of the ultrasonic knife device during use. The first clearance hole, the first slot corresponding to the pin shaft, the second slot corresponding to the first transmission member, and the third slot corresponding to the bearing can not only effectively support the radial force exerted on the ultrasonic knife device, but also reduce the deviation of accuracy and shortening of service life of the ultrasonic knife device due to radial force. At the same time, the spatial layout is reasonable and the structure is simple, which effectively reduces the axial space occupied by the ultrasonic knife device, is conducive to the lightweight and miniaturized production of the ultrasonic knife instrument box, and reduces the cost.

[0046] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An ultrasonic knife instrument box, characterized in that: The invention comprises a base (10), wherein a first clearance hole (100) is provided on the base (10), and an ultrasonic knife device is inserted into the first clearance hole (100); the ultrasonic knife device comprises a waveguide rod (30), an inner tube (40) sleeved on the outer periphery of the waveguide rod (30), and an outer tube (50) sleeved on the outer periphery of the inner tube (40); the waveguide rod (30), the inner tube (40) and the outer tube (50) are circumferentially fixedly connected by a pin shaft (300) radially inserted therethrough; the first clearance hole (100) can limit the pin shaft (300) in the radial direction of the outer tube (50), thereby preventing the pin shaft (300) from moving radially along the outer tube (50) and detaching from the ultrasonic knife device.

2. The ultrasonic knife instrument box according to claim 1, characterized in that: The inner tube (40) is provided with a second axial hole (410) for the pin shaft (300) to pass through, and the second axial hole (410) is an oblong hole arranged along the axial direction of the inner tube (40), and the pin shaft (300) can be displaced axially along the inner tube (40) relative to the second axial hole (410).

3. The ultrasonic knife instrument box according to claim 1, characterized in that: It also includes a first transmission member (70) and a bearing (80) which are rotatably sleeved and fixed on the periphery of the ultrasonic knife device.

4. According to the ultrasonic knife instrument box of claim 3, the connection method between the first transmission member and the ultrasonic knife device includes an interference fit or a connection through a pin shaft; the bearing is sleeved on the first transmission member or the ultrasonic knife device.

5. The ultrasonic knife instrument box according to claim 3, characterized in that: A first clamping groove (101) is provided at a position corresponding to the first clearance hole (100) and the pin shaft (300), the first clamping groove (101) is sleeved on the periphery of the outer tube (50), and the side wall of the first clamping groove (101) is used to limit the pin shaft (300) along the radial direction of the outer tube (50); a second clamping groove (102) is provided at a position corresponding to the first clearance hole (100) and the first transmission member (70), and a gap is provided between the second clamping groove (102) and the first transmission member (70); a third clamping groove (103) is provided at a position corresponding to the first clearance hole (100) and the bearing (80), and the third clamping groove (103) is tightly matched with the bearing (80).

6. The ultrasonic knife instrument box according to claim 1, characterized in that: It also includes a second transmission member (90) capable of moving up and down, wherein the second transmission member (90) is fixedly connected to the inner tube (40).

7. The ultrasonic knife instrument box according to claim 1, characterized in that: A connecting piece (301) is fixedly provided at one end of the waveguide rod (30), the connecting piece (301) being a screw rod, and the waveguide rod (30) is detachably connected to the transducer (2) via the connecting piece (301).

8. The ultrasonic knife instrument box according to claim 7, characterized in that: It also comprises a cover plate (20), the cover plate (20) being covered and fixed on the base (10), the cover plate (20) being provided with a second clearance hole (200), and the transducer (2) being plugged and fixed to the cover plate (20) via the second clearance hole (200).

9. The ultrasonic knife instrument box according to claim 3, characterized in that: The first transmission member is a gear member, and the gear member is also provided with an integrally connected sleeve (60), and the sleeve (60) is sleeved and fixed on the periphery of the outer tube (50).

10. The ultrasonic knife instrument box according to claim 9, characterized in that: The sleeve (60) is provided with a fourth axial hole (610) in the radial direction, and the pin (300) is inserted into the fourth axial hole (610), so that the sleeve (60) is fixedly connected to the outer tube (50), the inner tube (40), and the waveguide rod (30) in the circumferential direction.

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