CN116784947A - Ultrasonic knife bar, method of manufacturing ultrasonic knife bar, and ultrasonic knife - Google Patents
Ultrasonic knife bar, method of manufacturing ultrasonic knife bar, and ultrasonic knife Download PDFInfo
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- CN116784947A CN116784947A CN202310741884.5A CN202310741884A CN116784947A CN 116784947 A CN116784947 A CN 116784947A CN 202310741884 A CN202310741884 A CN 202310741884A CN 116784947 A CN116784947 A CN 116784947A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 95
- 238000000034 method Methods 0.000 claims description 10
- 229920002379 silicone rubber Polymers 0.000 claims description 9
- 230000000644 propagated effect Effects 0.000 claims description 8
- 239000004945 silicone rubber Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 claims description 3
- 229920001973 fluoroelastomer Polymers 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920001021 polysulfide Polymers 0.000 claims description 3
- 239000005077 polysulfide Substances 0.000 claims description 3
- 150000008117 polysulfides Polymers 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 description 7
- 238000005538 encapsulation Methods 0.000 description 7
- 208000032843 Hemorrhage Diseases 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 208000034158 bleeding Diseases 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
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- 238000010073 coating (rubber) Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 206010051814 Eschar Diseases 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100000333 eschar Toxicity 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002439 hemostatic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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- 230000003685 thermal hair damage Effects 0.000 description 1
Classifications
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- 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
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
-
- 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
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
- A61B2017/320074—Working tips with special features, e.g. extending parts blade
-
- 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
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320082—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for incising tissue
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Dentistry (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Knives (AREA)
Abstract
An ultrasonic blade bar is disclosed, comprising: a shaft for transmitting ultrasonic vibrations; the elastic rubber ring is sleeved on the rod body, and is arranged at a vibration node of the cutter rod, wherein the vibration node is the position with the minimum amplitude of the cutter rod; and the elastic rubber ring is separately formed and then fixed to the shaft. A method of manufacturing an ultrasonic blade bar and an ultrasonic blade are also disclosed.
Description
The present application is a division of the chinese patent application filed on month 11 and 21 of 2022, having application number 202211451591.5, entitled "ultrasonic blade bar, method of making ultrasonic blade bar, and ultrasonic blade," the entire contents of which are incorporated herein by reference.
Technical Field
Embodiments of the present disclosure relate to the field of medical instruments, and more particularly, to an ultrasonic blade bar, a method of manufacturing an ultrasonic blade bar, and an ultrasonic blade.
Background
Ultrasonic blade systems refer to medical surgical instruments that further amplify ultrasonic vibrations obtained by a piezoelectric transducer (which converts electrical energy to mechanical energy by an energy generator) and transmit the amplified ultrasonic vibrations by an ultrasonic blade bar for cutting and coagulating soft tissue. Clinically, the ultrasonic knife system adopts ultrasonic energy to treat soft tissues, completes cutting and coagulation simultaneously, realizes focus excision under the conditions of lower temperature and less bleeding, and can ensure minimal lateral thermal damage of tissues. With the popularity of minimally invasive surgery, ultrasonic blades have become a conventional instrument.
Ultrasonic blade systems generally include an ultrasonic transducer, a handle connected to the transducer, a blade bar assembly configured to be connected to the handle for propagating ultrasonic vibrations, and a blade head and clamp disposed on the blade bar at an end remote from the handle. The cutter bar assembly generally comprises a cutter bar, a sleeve sleeved outside the cutter bar and the like. In use, the ultrasonic transducer converts an electrical signal output by the host machine into mechanical energy to generate high-frequency vibration (i.e., ultrasonic vibration), and then the cutter bar propagates the generated ultrasonic vibration energy to the cutter head portion at the front end thereof. Because the cutter bar is vibrated by ultrasonic waves, an elastic rubber ring is required to be arranged between the cutter bar and the sleeve so that the cutter bar is positioned on the central line of the sleeve. Such rubber rings are generally arranged at the vibration node of the cutter bar, because the amplitude of the cutter bar at the vibration node is minimum, and the minimum friction to which the rubber rings are subjected is ensured. The rubber ring separates the cutter bar of the ultrasonic scalpel from the sleeve, and the cutter bar is prevented from being mechanically coupled with the sleeve sleeved outside the cutter bar during operation, so that the ultrasonic scalpel is prevented from being damaged. For example, the ultrasonic knife bar can be encapsulated by liquid silica gel or injection molded, etc. to improve the wear resistance of the knife bar during operation.
Disclosure of Invention
At least one embodiment of the present disclosure discloses an ultrasonic blade bar comprising: a shaft for transmitting ultrasonic vibrations; the elastic rubber ring is sleeved on the rod body, and is arranged at a vibration node of the cutter rod, wherein the vibration node is the position with the minimum amplitude of the cutter rod; and the elastic rubber ring is separately formed and then fixed to the shaft.
In at least one embodiment of the present disclosure, the distance between two vibration nodes on the cutter bar that are furthest from each other is an integer multiple of half a wavelength of the ultrasonic wave propagated by the cutter bar.
In at least one embodiment of the present disclosure, the cutter bar includes two elastic rubber rings sleeved at two vibration nodes on the shaft that are farthest from each other.
In at least one embodiment of the present disclosure, the tool bar further comprises one or more additional elastomeric rubber rings disposed at vibration nodes between the two vibration nodes furthest from each other.
In at least one embodiment of the present disclosure, the elastic rubber ring is disposed at each of the vibration nodes.
In at least one embodiment of the present disclosure, an annular groove matching the size of the elastic rubber ring is provided at the vibration node where the elastic rubber ring is provided, and the elastic rubber ring is partially embedded in the annular groove so as to be fixed to the shaft.
In at least one embodiment of the present disclosure, the minimum diameter of the annular groove is greater than or equal to 90% of the shaft diameter, and the maximum width of the annular groove is less than or equal to 10% of the half wavelength.
In at least one embodiment of the present disclosure, a positioning pin is provided at the vibration node provided with the elastic rubber ring and a positioning hole is provided at a corresponding position on the inner surface of the elastic rubber ring, or a positioning hole is provided at the vibration node provided with the elastic rubber ring and a positioning pin is provided at a corresponding position on the inner surface of the elastic rubber ring, and the elastic rubber ring is fixed to the shaft by inserting the positioning pin into the positioning hole.
In at least one embodiment of the present disclosure, the elastomeric ring is bonded to the shaft by an adhesive.
In at least one embodiment of the present disclosure, the knife bar is used in conjunction with an outer sleeve, and the elastomeric ring is in clearance fit relationship with the inner surface of the sleeve.
In at least one embodiment of the present disclosure, the elastic rubber ring: (1) Made of a silica gel selected from the group consisting of acrylate rubber addition type liquid silicone rubber, high temperature vulcanized silicone rubber, room temperature vulcanized silicone rubber, or any combination thereof, or (2) made of a rubber selected from the group consisting of natural rubber, nitrile rubber, neoprene rubber, chloro rubber, fluoro rubber, chloro ether rubber, polyurethane rubber, polysulfide rubber, or any combination thereof.
At least one embodiment of the present disclosure also discloses a method of manufacturing an ultrasonic blade bar, comprising: (1) manufacturing a shaft; (2) Manufacturing an elastic rubber ring, wherein the inner diameter of the elastic rubber ring is smaller than or equal to the minimum diameter of the rod body; (3) The elastic rubber ring is sleeved on the rod body and fixed to a vibration node of the rod body, wherein the vibration node is the position with the minimum amplitude of the cutter rod.
In at least one embodiment of the present disclosure, the method further comprises: an annular groove matching the size of the elastic rubber ring is formed at the vibration node of the shaft, and the elastic rubber ring is partially embedded in the annular groove so as to be fixed to the shaft.
In at least one embodiment of the present disclosure, the minimum diameter of the annular groove is greater than or equal to 90% of the shaft diameter, and the maximum width of the annular groove is less than or equal to 10% of the half wavelength.
At least one embodiment of the present disclosure also discloses an ultrasonic blade comprising a blade bar according to at least one embodiment of the present disclosure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure, not to limit the present disclosure.
FIG. 1 is a schematic structural view of an ultrasonic blade holder according to an embodiment of the present disclosure;
fig. 2 is an enlarged partial schematic view of the ultrasonic blade holder shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "inner", "outer", "upper", "lower", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.
The drawings in this disclosure are not necessarily to scale, and the specific dimensions and numbers of individual structures may be determined according to actual needs. The drawings described in the present disclosure are only schematic in structure.
The scalpel is an indispensable cutter in surgical medical instruments, but the traditional scalpel has the defects of more bleeding during operation, slow postoperative recovery and the like. The ultrasonic surgical knife which is gradually rising in recent years has the advantages of less surgical bleeding, quick postoperative recovery and the like, and is widely applied.
Compared with the traditional surgical knife, the ultrasonic surgical knife has a plurality of advantages. For example, the ultrasonic surgical knife can synchronously complete coagulation and cutting, can close blood vessels less than or equal to 5mm, has good hemostatic effect, and can reduce the risk of bleeding during operation; the device integrates the functions of grabbing, separating, cutting and coagulating, reduces the configuration of surgical instruments and the replacement frequency of the surgical instruments, shortens the surgical time and reduces the accident rate; cutting at 60-100 deg.c to coagulate, without eschar and heat damage to tissue; accurate cutting, less bleeding, less damage, quick postoperative recovery, etc.
In the working process, the cutter bar of the ultrasonic surgical knife is connected with the transducer, and ultrasonic vibration generated by the transducer is transmitted to the cutter head to finish the operations of coagulation, cutting and the like, and in the process, the cutter bar inevitably generates ultrasonic vibration. In order to avoid the cutter bar from being damaged due to mechanical coupling after the cutter bar contacts with the sleeve sleeved outside, a silica gel or rubber material is often required to be used for forming an isolation rubber layer on the surface of the cutter bar, such as forming a rubber ring at a specific position (such as a vibration node) on the surface of the cutter bar. Traditionally, ultrasonic blade bars have been formed after forming into layers or rings of glue by encapsulation with an encapsulation machine in an encapsulation die. Such encapsulation processes often require the purchase of specialized dedicated encapsulation equipment and molds, which is costly. In addition, each cutter bar is required to be placed in an encapsulation mould to be encapsulated by an encapsulation machine and vulcanized at a high temperature, so that the production time is long and the production efficiency is low.
At least one embodiment of the present disclosure discloses an ultrasonic blade bar. Fig. 1 is an overall schematic diagram of an ultrasonic blade holder provided by an embodiment of the present disclosure; fig. 2 is an enlarged partial schematic view of the ultrasonic blade holder shown in fig. 1.
Referring to fig. 1, a tool bar 1 according to an embodiment of the present disclosure includes an elongated cylindrical shaft 10, the shaft 10 having a central axis D and proximal and distal ends 101 and 102. The proximal end 101 is the end of the shaft 1 for interfacing with an ultrasonic transducer (not shown) and the distal end 102 is the end remote from the ultrasonic transducer and for mounting a tool bit.
For example, the ultrasonic vibration generated from the ultrasonic transducer is a longitudinal wave that vibrates from the proximal end 101 to the distal end 102 in the direction of the central axis D of the shaft 10. Longitudinal waves are waves (or called parallel) in which the direction of vibration of a particle is coaxial with the direction of propagation. Longitudinal waves are one type of wave motion (wave motion is divided into transverse waves and longitudinal waves), and are also called "dense waves", and the propagation process of the longitudinal waves is that a portion with different densities occurs along the direction of wave front. As shown in fig. 1, the shaft 10 has a plurality of vibration nodes P distributed in the D direction, for example, vibration nodes P 1 、P 2 、P 3 ……P t-1 、P t Wherein t is greater thanAn integer equal to 2. In some examples, t may be less than or equal to 10, e.g., less than or equal to 8, e.g., less than or equal to 6. When ultrasonic vibrations propagate on the tool bar 1, the vibration nodes of the shaft 10 correspond to the center between the sparse portion and the dense portion of the ultrasonic vibrations (i.e., half wavelength of the propagated ultrasonic vibrations), that is, the amplitude of the tool bar 10 is minimum at these vibration nodes. Wherein the node P is vibrated 1 、P 2 、P 3 ……P t 、P t The distance between any two adjacent vibration nodes is one half wavelength of the ultrasonic vibration propagated by the shaft 10, i.e., the vibration node P n And P n+1 (wherein 1.ltoreq.n.ltoreq.t-1) is one half wavelength of the ultrasonic vibration propagated by the shaft 10. Thus, the node P is vibrated 1 、P 2 、P 3 ……P t 、P t The distance between any two vibration nodes is an integer multiple of half a wavelength of the ultrasonic vibration propagated by the shaft 10.
For example, as shown in FIG. 1, the plurality of vibration nodes P includes a furthest vibration node P 1 (i.e., furthest from the proximal end 101 of the shaft 10) and a proximal-most vibration node P t (i.e., closest to the proximal end 101 of the tool bar 10). At the furthest vibration node P 1 And a nearest vibration node P 2 An annular groove and an elastic rubber ring sleeved on the annular groove are respectively arranged at the position. In fig. 2, the arrangement at the vibration node P is shown 1 Annular groove S at 1 And is sleeved on the annular groove S 1 Upper and partially embedded in the annular groove S 1 Elastic rubber ring G in (a) 1 Is an enlarged schematic view of (a). In some examples, annular groove S 1 Is greater than or equal to about 90% of the diameter of the shaft 10, and the annular groove S 1 Is less than or equal to about 10% of the half wavelength of the ultrasonic vibrations transmitted by the shaft 10. In some examples, the elastomeric ring is sized to match the size of the annular groove, e.g., elastomeric ring G 1 Is equal to or slightly smaller than the annular groove S 1 Is a minimum diameter of elastic rubber ring G 1 Is equal to or slightly smaller than the annular groove S 1 Is a width of (c). In some examples, elastic rubber ring G 1 Is formed separately in advance and then is fitted and fixed to the annular groove S 1 And (c) a plurality of the above-mentioned devices. Is arranged at the vibration node P 2 Annular groove and elastic rubber ring (not shown) at the position and annular groove S arranged at vibration node P1 1 And elastic rubber ring G 1 Substantially identical.
In some examples, the tool bar 1 is used in conjunction with an external sleeve during use, with the elastomeric ring in a clearance fit relationship with the inner surface of the sleeve.
In some examples, the elastomeric ring may: (1) Made of a silica gel selected from the group consisting of acrylate rubber addition type liquid silicone rubber, high temperature vulcanized silicone rubber, room temperature vulcanized silicone rubber, or any combination thereof, or (2) made of a rubber selected from the group consisting of natural rubber, nitrile rubber, neoprene rubber, chloro rubber, fluoro rubber, chloro ether rubber, polyurethane rubber, polysulfide rubber, or any combination thereof.
In some examples, the shank 10 of the tool bar 1 may be made of any suitable metal or alloy material, such as a material having a tensile strength of 500-5,000 mpa, or the like. Examples of materials that may be used to form the shaft 10 of at least one embodiment of the present disclosure include, but are not limited to, aluminum alloy materials, titanium alloy materials, magnesium alloy materials, cobalt alloy materials, and the like.
In the embodiment shown in fig. 1 and 2, the furthest vibration node P on the shaft 10 1 And a nearest vibration node P 2 An annular groove is arranged at the position and an elastic rubber ring is sleeved on the annular groove. However, in other embodiments of the present disclosure, the vibration node P located furthest away may also be located 1 And a nearest vibration node P 2 Any vibration node in between (i.e., at P m Where 1 is<m<t) one or more additional elastic rubber rings are arranged. For example, it is possible to vibrate at the node P m An extra elastic rubber ring is arranged at the position to lead P to m And P 1 Distance between and P m And P 2 The distance between them differs minimally. Alternatively, a vibration node P may be provided at each vibration node 1 、P 2 、P 3 ……P t 、P t Elastic rubber rings are arranged at the positions.
In the embodiment shown in fig. 1 and 2, the elastic rubber ring is fixed to the shaft by forming an annular groove at the vibration node and surrounding the elastic rubber ring on the annular groove. However, in other embodiments of the present disclosure, the elastic rubber band may also be secured to the shaft by other means. In some examples, a positioning pin may be provided on one of the vibration node and the elastic rubber ring on the shaft, and a positioning hole may be provided at a corresponding position of the other, with the elastic rubber ring being sleeved and fixed to the shaft by inserting the positioning pin into the positioning hole. For example, a locating pin may be provided at the vibration node and a locating hole may be provided at a corresponding location on the inner surface of the elastomeric ring; or a positioning hole is arranged at the vibration node, and a positioning pin is arranged at a corresponding position on the inner surface of the elastic rubber ring, so that the elastic rubber ring is sleeved and fixed on the rod body by inserting the positioning pin into the positioning hole. In other examples, the elastomeric ring may also be bonded to the shaft by an adhesive. For example, an adhesive may be provided at the vibration node of the shaft and/or on the inner surface of the elastic rubber ring, and the elastic rubber ring may be sleeved and fixed to the shaft by adhesive bonding.
The embodiment shown in fig. 1 and 2 has at least the following advantages: the elastic rubber ring is formed in advance and is sleeved and fixed on the rod body, so that the rubber coating production process is omitted, and the cost is reduced; the elastic rubber ring is made of elastic friction-resistant materials, so that the ultrasonic knife is effectively prevented from being damaged due to mechanical coupling after the knife bar is contacted with the sleeve during working.
At least one embodiment of the present disclosure also discloses a method of manufacturing an ultrasonic blade bar, comprising: (1) manufacturing a shaft; (2) Manufacturing an elastic rubber ring, wherein the inner diameter of the elastic rubber ring is smaller than or equal to the minimum diameter of the rod body; (3) The elastic rubber ring is sleeved on the rod body and fixed to the vibration node of the rod body, wherein the vibration node is the position with the minimum amplitude of the cutter rod. In some examples, the ultrasonic blade bar produced may be the bar of the embodiment shown in fig. 1 and 2.
In some examples, the method further comprises: an annular groove matching the size of the elastic rubber ring is formed at the vibration node of the shaft, and the elastic rubber ring is partially embedded in the annular groove, thereby being fixed to the shaft.
In some examples, in a tool bar made according to the method, the minimum diameter of the annular groove is greater than or equal to 90% of the shaft diameter, and the maximum width of the annular groove is less than or equal to 10% of the half wavelength.
The method for manufacturing an ultrasonic blade bar according to at least one embodiment of the present disclosure has at least the following advantages: the elastic rubber ring is formed in advance and is sleeved and fixed on the rod body, so that the rubber coating production process is omitted, and the cost is reduced.
At least one embodiment of the present disclosure also discloses an ultrasonic blade comprising a blade bar as described in at least one embodiment of the present disclosure or a blade bar prepared according to the method described in at least one embodiment of the present disclosure. For example, the ultrasonic blade may be the blade bar shown in fig. 1 and 2.
The ultrasonic blade according to at least one embodiment of the present disclosure has at least the following advantages: the elastic rubber ring is formed in advance and is sleeved and fixed on the rod body, so that the rubber coating production process is omitted, and the cost is reduced; the elastic rubber ring is made of elastic friction-resistant materials, so that the ultrasonic knife is effectively prevented from being damaged due to mechanical coupling after the knife bar is contacted with the sleeve during working.
In this context, the following points need to be noted:
(1) The drawings of the embodiments of the present disclosure relate only to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.
(2) The embodiments of the present disclosure and features in the embodiments may be combined with each other to arrive at a new embodiment without conflict.
(3) The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the disclosure, which is defined by the appended claims.
The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it should be covered in the protection scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (12)
1. An ultrasonic blade bar comprising: a shaft for transmitting ultrasonic vibrations; and an elastic rubber ring sleeved on the rod body, wherein,
the elastic rubber ring is arranged at a vibration node of the cutter bar, wherein the vibration node is the position with the minimum amplitude of the cutter bar; and is also provided with
The elastic rubber ring is separately formed and then fixed to the shaft,
wherein the vibration node provided with the elastic rubber ring is provided with an annular groove matched with the elastic rubber ring in size,
the elastic rubber ring is partially embedded in the annular groove so as to be fixed on the rod body.
2. The tool bar of claim 1, wherein a minimum diameter of the annular groove is greater than or equal to 90% of a diameter of the shaft, and a maximum width of the annular groove is less than or equal to 10% of a half wavelength of ultrasonic waves propagated by the tool bar.
3. An ultrasonic blade bar comprising: a shaft for transmitting ultrasonic vibrations; and an elastic rubber ring sleeved on the rod body, wherein,
the elastic rubber ring is arranged at a vibration node of the cutter bar, wherein the vibration node is the position with the minimum amplitude of the cutter bar; and is also provided with
The elastic rubber ring is separately formed and then fixed to the shaft,
wherein, a locating pin is arranged at the vibration node provided with the elastic rubber ring, and a locating hole is arranged at the corresponding position on the inner surface of the elastic rubber ring, or
A positioning hole is arranged at the vibration node provided with the elastic rubber ring, a positioning pin is arranged at a corresponding position on the inner surface of the elastic rubber ring,
the elastic rubber ring is fixed to the shaft by inserting the positioning pin into the positioning hole.
4. The tool bar of claim 1 or 3, wherein,
the distance between two vibration nodes on the cutter bar, which are furthest from each other, is an integer multiple of half the wavelength of the ultrasonic wave propagated by the cutter bar.
5. A tool bar according to claim 1 or 3, comprising two elastic rubber rings sleeved on the shaft at two vibration nodes furthest from each other.
6. The tool bar of claim 5 further comprising one or more additional elastomeric grommets disposed at a vibration node between the two vibration nodes furthest from each other.
7. The tool bar of claim 6 wherein said elastomeric rubber ring is disposed at each of said vibration nodes.
8. A tool bar according to claim 1 or claim 3, wherein the tool bar is for use with an outer sleeve, the elastomeric ring being in clearance fit relationship with the inner surface of the sleeve.
9. A tool bar according to claim 1 or 3, wherein the resilient rubber ring
(1) Made of a silica gel selected from the group consisting of acrylate rubber addition type liquid silicone rubber, high temperature vulcanized silicone rubber, room temperature vulcanized silicone rubber, or any combination thereof, or
(2) Is made of a rubber selected from the group consisting of natural rubber, nitrile rubber, neoprene rubber, chloro-rubber, fluoro-rubber, chloro-ether rubber, polyurethane rubber, polysulfide rubber, or any combination thereof.
10. A method of manufacturing an ultrasonic blade bar, comprising:
(1) Manufacturing a shaft;
(2) Manufacturing an elastic rubber ring, wherein the inner diameter of the elastic rubber ring is smaller than or equal to the minimum diameter of the rod body;
(3) An annular groove matched with the elastic rubber ring in size is formed at the vibration node of the rod body, the elastic rubber ring is sleeved on the rod body, and the elastic rubber ring is partially embedded into the annular groove, so that the elastic rubber ring is fixed to the vibration node of the rod body, wherein the vibration node is the position with the minimum amplitude of the cutter rod.
11. The method of claim 10, wherein a minimum diameter of the annular groove is greater than or equal to 90% of the shaft diameter and a maximum width of the annular groove is less than or equal to 10% of a half wavelength of ultrasonic waves propagated by the tool bar.
12. An ultrasonic blade comprising the blade bar of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310741884.5A CN116784947A (en) | 2022-11-21 | 2022-11-21 | Ultrasonic knife bar, method of manufacturing ultrasonic knife bar, and ultrasonic knife |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211451591.5A CN115624371A (en) | 2022-11-21 | 2022-11-21 | Ultrasonic blade holder, method for producing an ultrasonic blade holder, and ultrasonic blade |
| CN202310741884.5A CN116784947A (en) | 2022-11-21 | 2022-11-21 | Ultrasonic knife bar, method of manufacturing ultrasonic knife bar, and ultrasonic knife |
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| CN202310741884.5A Pending CN116784947A (en) | 2022-11-21 | 2022-11-21 | Ultrasonic knife bar, method of manufacturing ultrasonic knife bar, and ultrasonic knife |
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| US9364260B2 (en) * | 2012-05-25 | 2016-06-14 | Depuy Mitek, Llc | Method for atraumatic hip access |
| CN205885497U (en) * | 2016-06-23 | 2017-01-18 | 山东威瑞外科医用制品有限公司 | Ultrasonic knife head with centre gripping arm drive assembly |
| CN107550543A (en) * | 2017-09-13 | 2018-01-09 | 常州市斯博特医疗器械有限公司 | One kind dissection tissue culture double end scalpel |
| CN107951544A (en) * | 2017-12-18 | 2018-04-24 | 任伟 | A kind of scalpel high with adjustable rotary cutter head safety operation control coefficient |
| CN108354652A (en) * | 2018-02-08 | 2018-08-03 | 南昌元合泽众科技有限公司 | A kind of reusable ultrasonic surgical blade |
| CN209789964U (en) * | 2018-12-28 | 2019-12-17 | 北京速迈医疗科技有限公司 | Minimally invasive osteotome for ultrasonic surgical systems |
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