A wearable ultrasonic knife

Abstract

The present invention provides a wearable ultrasonic knife, including a high-frequency current generator and a transducer, wherein the high-frequency current generator is electrically connected to the transducer, and further includes an ultrasonic vibration transmission component and two finger sleeves, wherein the ultrasonic vibration transmission component includes a main ultrasonic knife rod, wherein one end of the main ultrasonic knife rod is connected to the transducer, and two branch ultrasonic knife rods are hinged on the other end; an ultrasonic knife head is provided on each of the two finger sleeves, and the two branch ultrasonic knife rods are respectively connected to the two ultrasonic knife heads. The wearable ultrasonic knife in this scheme is wearable and can be worn on the index finger and thumb, and the purpose of cutting is achieved by directly contacting the tissue to be severed with the fingers, and has the advantages of higher operational flexibility, larger operating space in the patient's body, easy control, convenient processing and manufacturing, and wider application range.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a wearable ultrasonic scalpel. Background Art

[0002] Ultrasonic scalpel is a precise and efficient energy surgical instrument. It converts electrical energy into mechanical energy and oscillates at a high frequency of 20 to 60 kHz to vaporize the water in the contacted tissue cells, break the protein hydrogen bonds, and cut the tissue after coagulation. It can achieve hemostasis and cutting at the same time, speeding up the operation. Ultrasonic scalpel has been increasingly used in various surgeries. It applies ultrasonic energy to surgery. Its outstanding features are fine cutting, safety, tissue selectivity and low-temperature hemostasis, which greatly enriches the means of surgery, improves the quality of surgery, and alleviates the pain of patients to a certain extent. The system of conventional ultrasonic scalpel is mainly composed of a host, a handle, an ultrasonic transducer rod and a scalpel head. However, larger tumors in the abdominal cavity or tumors in deeper locations are often difficult to expose. The current ultrasonic scalpel has the disadvantages of being too thick in diameter and not bendable, so it is difficult to apply to these difficult-to-expose surgeries. Summary of the invention

[0003] In view of the above problems in the prior art, the present invention provides a wearable ultrasonic scalpel that can be worn on the index finger and thumb. The ultrasonic scalpel head can be controlled by the fingers to contact the tissue to be severed to achieve the purpose of cutting, thereby solving the problem that the ultrasonic scalpel in the prior art is not bendable, has poor operating flexibility, and is difficult to cut hidden tissue parts.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0005] Provided is a wearable ultrasonic knife, comprising a high-frequency current generator and a transducer, wherein the high-frequency current generator is electrically connected to the transducer, and further comprising an ultrasonic vibration transmission component and two finger sleeves, wherein the ultrasonic vibration transmission component comprises a main ultrasonic knife rod, wherein one end of the main ultrasonic knife rod is connected to the transducer, and two branch ultrasonic knife rods are hinged on the other end; an ultrasonic knife head is arranged on each of the two finger sleeves, and the two branch ultrasonic knife rods are respectively connected to the two ultrasonic knife heads.

[0006] The transducer converts the electrical energy of the high-frequency current generator into mechanical energy, and transmits the mechanical energy to the ultrasonic blade head through the main ultrasonic blade rod and two branch ultrasonic blade rods, so that the ultrasonic blade head performs ultrasonic high-frequency oscillation; the ultrasonic blade head is respectively arranged on two finger sleeves, which can be worn on the index finger and the thumb, and the purpose of cutting is achieved by directly contacting the tissue to be severed with the fingers. The advantages are higher operational flexibility, larger operating space in the patient's body, easy control, convenient processing and manufacturing, and wider application range. The problem that the ultrasonic blade in the prior art is that it cannot be bent, has poor operational flexibility, and is difficult to cut hidden tissue parts is solved.

[0007] Further, as a specific connection method between the main ultrasonic knife rod and the transducer, a connection part is provided at the end of the main ultrasonic knife rod connected to the transducer. The cross-section of the connection part is in a "T" shape. The connection part includes a large-diameter section and a small-diameter section. One end face of the small-diameter section is fixedly connected to one end face of the large-diameter section;

[0008] The transducer includes a housing, and a piezoelectric ceramic stack is fixedly arranged inside the housing. The piezoelectric ceramic stack is electrically connected to a high-frequency current generator through a cable;

[0009] The large-diameter section of the connection part is arranged inside the housing. One end face of the large-diameter section contacts the inner bottom surface of the housing, and the other end face contacts the end face of the piezoelectric ceramic stack; the small-diameter section passes through the housing and is connected to the main ultrasonic knife rod.

[0010] Under the action of the high-frequency current of the high-frequency current generator, the piezoelectric ceramic stack undergoes repeated deformations, pushing the connection part to perform high-frequency reciprocating linear motion. The moving connection part transmits mechanical energy to the ultrasonic knife head through the main ultrasonic knife rod and two branch ultrasonic knife rods, realizing the ultrasonic high-frequency oscillation of the ultrasonic knife head, vaporizing the water vapor of the contacted tissue cells, breaking the protein hydrogen bonds, and coagulating and cutting the tissue, which can simultaneously achieve hemostasis and cutting and accelerate the surgical speed.

[0011] Further, an elastic element is arranged between the end face of the large-diameter section and the inner bottom surface of the housing. Both ends of the elastic element are respectively in contact with the end face of the large-diameter section and the inner bottom surface of the housing. The elastic element can be a cylindrical spring or an elastic metal reed. The elastic element makes there be a certain gap between the end face of the large-diameter section and the inner bottom surface of the housing. The elastic element enables the connection part to quickly return to the initial position, facilitating the piezoelectric ceramic stack to drive the connection part, and then driving the main ultrasonic knife rod to perform reciprocating linear motion; it also prevents the end face of the large-diameter section from contacting the inner bottom surface of the housing, avoiding the moving connection part from touching the inner bottom surface of the housing and causing damage to the housing.

[0012] Further, a sliding sleeve is arranged on each of the two finger sleeves. The cross-sections of the two sliding sleeves are in a "U" shape. Guide protrusions are arranged on both sides at the opening of the sliding sleeve, and the guide protrusions are arranged along the length direction of the sliding sleeve;

[0013] The two ultrasonic knife heads are respectively movably arranged inside the sliding sleeves. A groove is arranged on each of the two side surfaces of each ultrasonic knife head. The groove matches the guide protrusion, and the groove is slidably connected to the guide protrusion; the end parts of the two branch ultrasonic knife rods are respectively hinged to the end faces of the two ultrasonic knife heads. The sliding connection between the ultrasonic knife head and the finger sleeve is realized through the sliding sleeve and the guide protrusion. The ultrasonic knife head performing ultrasonic high-frequency oscillation reciprocates linearly inside the sliding sleeve, avoiding the ultrasonic knife head from driving the finger sleeve to perform high-frequency oscillating motion, facilitating the medical staff to control, and also improving the operation stability of the wearable ultrasonic knife.

[0014] Further, in order to improve the service life and facilitate disinfection, the materials of the sliding sleeve, the guide protrusion and the ultrasonic knife head are all stainless steel.

[0015] Furthermore, when the ultrasonic blade head cuts the lesion, it will generate heat, which will increase the temperature of the finger sleeve. In order to prevent the heat on the ultrasonic blade head from being transferred from the sliding sleeve to the finger sleeve, a heat insulation board is provided between the finger sleeve and the sliding sleeve. The material of the heat insulation board is a polyolefin high temperature resistant heat insulation material. The heat insulation board can block the heat transfer between the finger sleeve and the sliding sleeve, preventing the high temperature finger sleeve from scalding the fingers of medical staff, thereby affecting the operation of medical staff.

[0016] Furthermore, the outer walls of the main ultrasonic blade rod and the two branch ultrasonic blade rods are covered with a protective shell, and the material of the protective shell is fluorinated vinyl resin or polyester.

[0017] Furthermore, in order to connect the two finger sleeves together for convenient matching use, a connecting spring sheet is provided between the two finger sleeves. The connecting spring sheet is semicircular, and both ends of the connecting spring sheet are respectively fixedly connected to the two finger sleeves. The connecting spring sheet is made of beryllium copper spring sheet.

[0018] Furthermore, in order to prevent the medical staff from falling off when wearing the finger gloves, anti-slip rings are fixedly provided in the finger insertion openings of the two finger gloves.

[0019] Furthermore, when medical staff are performing a cutting operation, it is inconvenient for their hands to control the switch state of the high-frequency current generator, and thus it is inconvenient to control the working state of the ultrasonic blade. A foot switch is provided on the high-frequency current generator, and the working state of the ultrasonic blade is controlled by the foot, thereby solving the problem that it is inconvenient for medical staff to control the switch of the high-frequency current generator with their hands.

[0020] The beneficial effects of the present invention are as follows: the wearable ultrasonic scalpel in this scheme is wearable and can be worn on the index finger and the thumb. The purpose of cutting is achieved by directly contacting the tissue to be severed with the fingers. The advantages are higher operational flexibility, larger operating space in the patient's body, easy control, convenient processing and manufacturing, and a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a wearable ultrasonic knife.

[0022] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0024] Among them, 1. high-frequency current generator; 2. transducer; 201. shell; 202. piezoelectric ceramic stack; 3. finger sleeve; 4. main ultrasonic knife rod; 5. branch ultrasonic knife rod; 6. ultrasonic knife head; 7. connecting part; 701. large diameter section; 702. small diameter section; 8. elastic element; 9. sliding sleeve; 10. guide protrusion; 11. groove; 12. heat insulation board; 13. protective shell; 14. connecting spring sheet; 15. anti-slip ring; 16. foot switch. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0026] like Figures 1 to 3 As shown, the present invention provides a wearable ultrasonic scalpel, which includes a high-frequency current generator 1 and a transducer 2, wherein the high-frequency current generator 1 is electrically connected to the transducer 2; a foot switch 16 is provided on the high-frequency current generator 1. During the cutting operation performed by medical personnel, it is inconvenient for the hands to control the switch state of the high-frequency current generator 1, and further inconvenient to control the working state of the ultrasonic scalpel head 6. The setting of the foot switch 16 allows the feet to control the working state of the ultrasonic scalpel head 6, thereby solving the problem that the hands of medical personnel are inconvenient to control the switch of the high-frequency current generator 1.

[0027] The wearable ultrasonic knife also includes an ultrasonic vibration transmission component and two finger sleeves 3. A connecting spring sheet 14 is arranged between the two finger sleeves 3. The connecting spring sheet 14 is semicircular. The two ends of the connecting spring sheet 14 are respectively fixedly connected to the two finger sleeves 3. The material of the connecting spring sheet 14 is a beryllium copper spring sheet. The connecting spring sheet 14 can connect the two finger sleeves 3 together for convenient matching use.

[0028] The finger insertion openings of the two finger sleeves 3 are both fixedly provided with anti-skid rings 15, which can prevent the medical staff from falling off when wearing the finger sleeves 3. The material of the anti-skid rings 15 can be PVC soft glue or silicone.

[0029] The ultrasonic vibration transmission component includes a main ultrasonic blade rod 4, one end of which is connected to the transducer 2, and the other end of which is hinged with two branch ultrasonic blade rods 5; each of the two finger sleeves 3 is provided with an ultrasonic blade head 6, and the two branch ultrasonic blade rods 5 are respectively connected to the two ultrasonic blade heads 6. The outer walls of the main ultrasonic blade rod 4 and the two branch ultrasonic blade rods 5 are both covered with a protective shell 13, and the material of the protective shell 13 is fluorinated vinyl resin or polyester.

[0030] The transducer 2 converts the electrical energy of the high-frequency current generator 1 into mechanical energy, and transmits the mechanical energy to the ultrasonic blade head 6 through the main ultrasonic blade rod 4 and the two branch ultrasonic blade rods 5, so that the ultrasonic blade head 6 performs ultrasonic high-frequency oscillation; the ultrasonic blade head 6 is respectively arranged on two finger sleeves 3, which can be worn on the index finger and the thumb, and the purpose of cutting is achieved by directly contacting the tissue to be severed with the fingers. The advantages are higher operational flexibility, larger operating space in the patient's body, easy control, convenient processing and manufacturing, and wider application range, which solves the problem that the ultrasonic knife in the prior art is non-bendable, has poor operational flexibility, and is difficult to cut hidden tissue parts.

[0031] As a specific connection method between the main ultrasonic knife rod 4 and the transducer 2, a connecting portion 7 is provided at the end portion where the main ultrasonic knife rod 4 is connected to the transducer 2. The cross section of the connecting portion 7 is in a "T" shape. The connecting portion 7 includes a large diameter section 701 and a small diameter section 702. One side end surface of the small diameter section 702 is fixedly connected to one side end surface of the large diameter section 701.

[0032] The transducer 2 includes a housing 201, a piezoelectric ceramic stack 202 is fixedly arranged inside the housing 201, and the piezoelectric ceramic stack 202 is electrically connected to the high-frequency current generator 1 through a cable;

[0033] The large diameter section 701 of the connecting part 7 is arranged in the shell 201, and one end surface of the large diameter section 701 contacts the inner bottom surface of the shell 201, and the other end surface contacts the end surface of the piezoelectric ceramic stack 202; the small diameter section 702 passes through the shell 201 and is connected to the main ultrasonic knife rod 4.

[0034] Under the action of the high-frequency current of the high-frequency current generator 1, the piezoelectric ceramic stack 202 undergoes repeated deformation, pushing the connecting part 7 to perform high-frequency reciprocating linear motion. The moving connecting part 7 transmits mechanical energy to the ultrasonic blade head 6 through the main ultrasonic blade rod 4 and the two branch ultrasonic blade rods 5, so that the ultrasonic blade head 6 performs ultrasonic high-frequency oscillation, vaporizes water in the contacted tissue cells, breaks protein hydrogen bonds, and the tissue is coagulated and then incised, which can achieve hemostasis and cutting at the same time, speeding up the operation.

[0035] An elastic element 8 is provided between the end face of the large diameter section 701 and the inner bottom face of the shell 201, and the two ends of the elastic element 8 are in contact with the end face of the large diameter section 701 and the inner bottom face of the shell 201 respectively. The elastic element 8 can be a cylindrical spring or an elastic metal spring sheet. The elastic element 8 allows a certain gap between the end face of the large diameter section 701 and the inner bottom face of the shell 201. The elastic element 8 allows the connection part 7 to quickly return to the initial position, which is convenient for the piezoelectric ceramic stack 202 to drive the connection part 7, and then drive the main ultrasonic blade rod 4 to reciprocate linear motion; it also prevents the end face of the large diameter section 701 from contacting the inner bottom face of the shell 201, and avoids the moving connection part 7 from touching the inner bottom face of the shell 201 and damaging the shell 201.

[0036] A sliding sleeve 9 is provided on each of the two finger sleeves 3. The cross-section of the two sliding sleeves 9 is U-shaped. Guide protrusions 10 are provided on both sides of the opening of the sliding sleeve 9, and the guide protrusions 10 are arranged along the length direction of the sliding sleeve 9. Two ultrasonic knife heads 6 are respectively movably arranged in the sliding sleeves 9. A groove 11 is provided on each side surface of each ultrasonic knife head 6. The groove 11 matches the guide protrusion 10, and the groove 11 is slidably connected to the guide protrusion 10. The end parts of two branch ultrasonic knife rods 5 are respectively hinged to the end surfaces of the two ultrasonic knife heads 6. The sliding connection between the ultrasonic knife head 6 and the finger sleeve 3 is realized through the sliding sleeve 9 and the guide protrusion 10. The ultrasonic knife head 6 performing ultrasonic high-frequency oscillation reciprocates linearly in the sliding sleeve 9, avoiding the ultrasonic knife head 6 driving the finger sleeve 3 to perform high-frequency oscillation movement, which is convenient for medical staff to control and also improves the operation stability of the wearable ultrasonic knife.

[0037] The sliding sleeve 9, the guide protrusion 10 and the ultrasonic knife head 6 are all made of stainless steel, which can improve the service life of the components and facilitate the disinfection treatment of the components.

[0038] A heat insulation plate 12 is provided between the finger sleeve 3 and the sliding sleeve 9. The material of the heat insulation plate 12 is a polyolefin high-temperature resistant heat insulation material. When the ultrasonic knife head 6 cuts the diseased part, heat will be generated, causing the temperature of the finger sleeve 3 to rise. The heat insulation plate 12 can block the heat transfer between the finger sleeve 3 and the sliding sleeve 9, avoiding the high-temperature finger sleeve 3 from scalding the fingers of medical staff and thus affecting the operation of medical staff.

[0039] In summary, the wearable ultrasonic knife in this solution has wearability and can be worn on the index finger and thumb. The purpose of cutting is achieved by directly contacting the tissue to be transected with the fingers, which has higher operation flexibility, a larger operation space in the patient's body, is easy to control, is convenient for processing and manufacturing, and has a wider application range.

Claims

1. A wearable ultrasonic scalpel, comprising a high-frequency current generator (1) and a transducer (2), wherein the high-frequency current generator (1) is electrically connected to the transducer (2), and is characterized in that: It further includes an ultrasonic vibration transmission component and two finger sleeves (3). The ultrasonic vibration transmission component includes a main ultrasonic cutter bar (4). One end of the main ultrasonic cutter bar (4) is connected to the transducer (2), and two branch ultrasonic cutter bars (5) are hinged to the other end; One ultrasonic cutter head (6) is provided on each of the two finger sleeves (3), and the two branch ultrasonic cutter bars (5) are respectively connected to the two ultrasonic cutter heads (6); A connecting portion (7) is provided at the end of the main ultrasonic cutter bar (4) connected to the transducer (2). The cross-section of the connecting portion (7) is in a "T" shape. The connecting portion (7) includes a large-diameter section (701) and a small-diameter section (702). One end face of the small-diameter section (702) is fixedly connected to one end face of the large-diameter section (701); The transducer (2) includes a housing (201). A piezoelectric ceramic stack (202) is fixedly arranged inside the housing (201). The piezoelectric ceramic stack (202) is electrically connected to the high-frequency current generator (1) through a cable; The large-diameter section (701) of the connecting portion (7) is arranged inside the housing (201). One end face of the large-diameter section (701) contacts the inner bottom surface of the housing (201), and the other end face contacts the end face of the piezoelectric ceramic stack (202); the small-diameter section (702) passes through the housing (201) and is connected to the main ultrasonic cutter bar (4); An elastic element (8) is arranged between the end face of the large-diameter section (701) and the inner bottom surface of the housing (201). Two ends of the elastic element (8) respectively contact the end face of the large-diameter section (701) and the inner bottom surface of the housing (201); One sliding sleeve (9) is provided on each of the two finger sleeves (3). The cross-sections of the two sliding sleeves (9) are in a "U" shape. Guide protrusions (10) are provided on both sides at the opening of the sliding sleeve (9). The guide protrusions (10) are arranged along the length direction of the sliding sleeve (9); The two ultrasonic cutter heads (6) are respectively movably arranged inside the sliding sleeves (9). One groove (11) is provided on each of the two side surfaces of each ultrasonic cutter head (6). The groove (11) matches the guide protrusion (10), and the groove (11) is slidably connected to the guide protrusion (10); the end parts of the two branch ultrasonic cutter bars (5) are respectively hinged to the end faces of the two ultrasonic cutter heads (6); A heat insulation plate (12) is arranged between the finger sleeve (3) and the sliding sleeve (9). The material of the heat insulation plate (12) is a polyolefin high-temperature heat insulation material; A connecting spring piece (14) is arranged between the two finger sleeves (3). The connecting spring piece (14) is semicircular. Two ends of the connecting spring piece (14) are respectively fixedly connected to the two finger sleeves (3). The material of the connecting spring piece (14) is beryllium copper spring piece.

2. A wearable ultrasonic scalpel according to claim 1, characterized in that: The materials of the sliding sleeve (9), the guide protrusion (10) and the ultrasonic cutter head (6) are all stainless steel.

3. A wearable ultrasonic scalpel according to claim 1, characterized in that: Protection shells (13) are sleeved on the outer walls of the main ultrasonic cutter bar (4) and the two branch ultrasonic cutter bars (5). The material of the protection shell (13) is fluorinated ethylene resin or polyester.

4. A wearable ultrasonic scalpel according to claim 1, characterized in that: Anti-slip rings (15) are fixedly arranged at the finger insertion openings of the two finger sleeves (3).

5. A wearable ultrasonic scalpel according to claim 1, characterized in that: The high-frequency current generator (1) is provided with a foot switch (16).

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