CN113907848A - Single-time long-distance ultrasonic scissors with side-tipping shearing function - Google Patents
Single-time long-distance ultrasonic scissors with side-tipping shearing function Download PDFInfo
- Publication number
- CN113907848A CN113907848A CN202111262734.3A CN202111262734A CN113907848A CN 113907848 A CN113907848 A CN 113907848A CN 202111262734 A CN202111262734 A CN 202111262734A CN 113907848 A CN113907848 A CN 113907848A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- rod
- working section
- cutter head
- button
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010008 shearing Methods 0.000 title claims abstract description 28
- 238000005452 bending Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 241000561734 Celosia cristata Species 0.000 claims description 2
- 210000001520 comb Anatomy 0.000 claims description 2
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000004230 Fast Yellow AB Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002439 hemostatic effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- A61B17/3201—Scissors
-
- 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
Abstract
The invention discloses a single-time long-distance ultrasonic scissors with a side-tipping shearing function, which comprises a first shaft component and a second shaft component, wherein the first shaft component comprises a first handheld part and an elbow, the second shaft component comprises a second handheld part, a pipe sleeve and a waveguide rod, an energy converter and a circuit board switch which are connected with the waveguide rod are arranged in the second handheld part, the pipe sleeve penetrates through the bending part of the elbow, and the pipe sleeve and the elbow are connected through a pivot; the cutter head of the wave guide rod extends out of the port of the pipe sleeve and extends forwards in an arc shape and is arranged in the pipe sleeve in a deflecting mode, and the far end of the elbow is a working section which is consistent with the radian of the cutter head and can be tightly attached to the cutter head. The invention increases the length of the cutter head and leads the cutter head to extend in an arc shape, improves the integral strength of the cutter head, deflects the waveguide rod to ensure that the inner cutting surface forms an inclined structure, ensures the close contact between the cutter head and the far end of the working section and ensures the smoothness and the integrity of the shearing.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to ultrasonic scissors with a single long-distance shearing effect.
Background
The application of ultrasound in surgical operations is generally to convert and transmit ultrasonic energy into biological tissues, the thermal effect of which generates mechanical vibration to break the hydrogen bonds of tissue proteins, denature and coagulate the proteins, and in particular to coagulate, stanch and cut tissues by using the generated mechanical energy and thermal energy. In a surgical instrument, an ultrasonic generator (ultrasonic device main unit) generates high-frequency electric energy, converts the high-frequency electric energy into mechanical vibration energy by using a piezoelectric material or an electromagnetic compression material through a transducer, and amplifies and transmits the vibration energy to an action end (or a cutter head of a cutter bar).
The ultrasonic scissors are the most common surgical instruments in surgical operations at present, and have the advantages of high cutting speed, good hemostatic effect, simple operation, safety and convenience. Compared with the traditional mechanical scalpel, the ultrasonic scalpel is clinically used, so that the operation time can be greatly shortened, and the blood loss and transfusion of a patient are reduced, thereby reducing complications and operation cost.
In current ultrasonic scissors, the length of its operation end is generally shorter, and once cuts the distance shorter, brings very big inconvenient operation, and if the simple extension can lead to shear strength not enough because of the comparatively fine reason of shearing work end, can't accurate shearing. In addition, the conventional sleeve is directly sleeved outside the waveguide rod, and the pivoting angle between the sleeve and the elbow is small, so that the opening angle of the operation end is limited, the conventional sleeve cannot adapt to a thicker or more complex tissue structure, and great inconvenience is brought to the operation. Therefore, how to improve the length of the operation end and ensure the shearing strength is a problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide single-time long-distance ultrasonic scissors with a side-tipping shearing function.
The purpose of the invention is realized by the following technical scheme:
a single-time long-distance ultrasonic scissors with a side-tipping shearing function comprises a first shaft member and a second shaft member, wherein the first shaft member comprises a first handheld part and an elbow arranged at the far end of the first handheld part, the second shaft member comprises a second handheld part, a pipe sleeve arranged at the far end of the second handheld part and a waveguide rod penetrating into the pipe sleeve, a hollow accommodating cavity is formed in the second handheld part, a transducer connected with the waveguide rod and a circuit board switch for controlling the energy of the transducer are arranged in the accommodating cavity, the pipe sleeve penetrates through the bending part of the elbow, and the overlapped parts of the two sides of the pipe sleeve and the bending part are connected through a pin pivot, so that the first shaft member and the second shaft member form a scissor structure; the cutter head of the waveguide rod extends out of the port of the pipe sleeve and extends forwards in an arc shape, the waveguide rod extends out of the port of the pipe sleeve at the far end of the waveguide rod and extends forwards in an arc shape to form the cutter head, a through hole which deflects to the first side of the cutter head is formed in the tail of the pipe sleeve, and a pin penetrates through the through hole to enable the waveguide rod to be deflected and limited in the pipe sleeve; the distal end of the elbow is a working section consistent with the radian of the cutter head, the distal end of the inner cutting surface is closer to the inner surface of the working section than the proximal end of the inner cutting surface, and the first side of the inner cutting surface is closer to the inner surface of the working section than the second side of the inner cutting surface; during shearing, the inner cutting surface is firstly contacted with the far end of the inner surface of the working section, and under the deformation of the cutter head, the inner cutting surface and the inner surface of the working section are gradually and tightly jointed from the far end of the inner cutting surface to the near end of the inner cutting surface and from the first side to the second side.
Preferably, the deflection angle δ is set according to the following formula [ 1 ]:
wherein: lb is waveguide rod and cutter rod bending deflection; d1 is the distance between the center of rotation of the waveguide rod and the distal end of the tool bit,
said LbIs represented by the following formula【2】 Taking values:
wherein F is the shear pressure of the tool bit of the waveguide rod, the joint of the waveguide rod, which is connected with the tool bit and supports the tool bit, is taken as a fixed end, L is the distance from the bent middle section of the tool bit to the joint, E is the elastic modulus of the waveguide rod tool bit, and I is the inertia moment of the waveguide rod tool bit;
the I is valued by the following formula [ 3 ]:
wherein D is the outer diameter of the cutter head of the waveguide rod.
Preferably, the distance L is configured by a total length L' of a cutter head of the waveguide rod, the cutter head is curved, a first side of the cutter head is a concave surface, and a second side of the cutter body is a convex surface; the total length L' of the cutter head meets the following formula:
wherein, a, y2Are the coordinate coefficients of the reference points, respectively, which are the (-ay) coordinates2,y2) Specifically, the intersection point of a ray generated by taking the tool nose of the tool bit of the waveguide rod as an origin and the tool bar of the waveguide rod is parallel to the tangent line of the convex surface.
Preferably, the axis of the pin coincides with the axis of the sleeve, the inner surface of the working section extends obliquely from the proximal end to the distal end thereof at a side inclination angle of 0.5-2 °, and the perpendicular distance between the proximal end of the inner surface of the working section and the axis of the sleeve is greater than the perpendicular distance between the distal end of the inner surface of the working section and the axis of the sleeve in the non-clamping state of the inner cutting surface and the inner surface of the working section.
Preferably, the axis of the pin is not coincident with the axis of the sleeve, and the axis of the pin is arranged close to the elbow; in the clamping state, the inner surface of the working section is parallel to the axis of the sleeve.
Preferably, be provided with the cushion on the working section internal surface, the axis department of working section internal surface is provided with the recess, the back of cushion have with recess assorted convex part, the convex part card is located in the recess, the surface of cushion is the cockscomb structure.
Preferably, the sleeve is formed by splicing a front sleeve and a rear sleeve, the rear sleeve is sleeved in from the tail end of the waveguide rod, and the through hole is formed in the rear sleeve; the front sleeve is sleeved from the far end of the waveguide rod and fixedly connected with the rear sleeve, a limiting hole is formed in the joint of the front sleeve and the rear sleeve, hinge holes are formed in two sides of the bending part of the elbow, the limiting hole and the hinge holes are coaxial, and two ends of the pin are respectively arranged in the hinge holes and the limiting holes in a penetrating mode, so that the sleeve is in pivot connection with the elbow.
Preferably, the connecting part of the front sleeve and/or the rear sleeve is provided with a notch, and when the front sleeve and the rear sleeve are connected into a whole, the notches are spliced two by two to form the limiting hole.
Preferably, the interlocking button assembly is electrically connected with the circuit board switch and comprises a first button, a second button and a connecting lever, the connecting lever at least comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are connected, the other end of the first connecting rod and the other end of the second connecting rod extend in the same direction, the connecting lever takes the central point of the first connecting rod as a fulcrum, the first button and the second button are symmetrically arranged at two ends of the outer side of the first connecting rod relative to the fulcrum, the extending end of the second connecting rod is a contact rod, the contact rod is located between two contact surfaces of the circuit board switch, and the two contact surfaces are respectively connected with the first button or the second button through the connecting lever.
Preferably, a support rod is arranged between the first connecting rod and the second connecting rod, and two ends of the support rod are respectively connected to the central points of the first connecting rod and the second connecting rod.
Preferably, the device further comprises an interlocking button assembly electrically connected with the circuit board switch, wherein the interlocking button assembly comprises a first button, a second button and a rocker arm assembly, the rocker arm structure consists of a first rocker arm and a second rocker arm which are connected in an abutting mode, the first rocker arm is V-shaped, and a first support arm and a first connecting arm extend outwards from a first rotating center of the first rocker arm; the second rocker arm is Y-shaped, a second support arm, a second connecting arm and a contact arm extend from a second rotating center of the second rocker arm, the first button is arranged on the first support arm, the second button is arranged on the second support arm, the inner surfaces of the extending end portions of the first connecting arm and the second connecting arm are in butt joint, the contact arm is located between two contact surfaces of the circuit board switch, and the two contact surfaces are respectively connected with the first button or the second button through the rocker arm component.
The invention has the following beneficial effects:
1. the length of the cutter head is lengthened compared with the conventional length so as to meet the requirement of shearing operation for one-time operation for a longer distance in the operation process, the cutter head extends in an arc shape, the integral strength of the cutter head is improved, the waveguide rod is arranged in a deflection mode, the far end of the inner cutting surface is closer to the inner surface of the working section relative to the near end of the inner cutting surface due to the arc-shaped structure of the inner cutting surface, an inclined structure is formed, the cutter head is ensured to be in close contact with the far end of the working section, the close fit between the inner cutting surface and the inner surface of the working section is ensured, and the smoothness and the integrity of shearing are ensured;
2. the inner surface of the working section is obliquely arranged, so that the distance between the inner surface of the working section and the far end of the inner cutting surface is smaller, the inner surface of the working section and the far end of the inner cutting surface are further ensured to be contacted firstly when the inner surface of the working section and the far end of the inner cutting surface are sheared, and the shearing force between the inner surface of the working section and the far end is ensured;
3. the pin is arranged to be deviated to one side of the elbow, so that the distance between the inner surface of the working section and the inner cutting surface can be shortened without inclining the inner surface of the working section, and the shearing force between the inner surface of the working section and the inner cutting surface is ensured; meanwhile, the arrangement can ensure that the opening distance between the inner cutting surface and the inner surface of the working section is larger, so that thicker or more complex structures can be conveniently operated, and more labor is saved; 4. the structure that the pin penetrates through the side face is adopted between the sleeve and the elbow, so that the pivot connection between the sleeve and the elbow is more flexible, the opening angles of the inner cutting face and the inner surface of the working section are enlarged as much as possible, and the operation of thicker or more complex structure tissues is facilitated;
5. the arc structure of tool bit can carry out deformation to a certain extent for when pressing from both sides tightly, the distal end of internal cutting face and working section internal surface contacts earlier, realizes progressively hugging closely of whole face along first side to the second side again, has effectively guaranteed hugging closely between internal cutting face and the working section internal surface, improves the stability and the reliability of operation.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1: front view of the preferred embodiment of the present invention;
FIG. 2: FIG. 1 is a schematic view of a connecting lever;
FIG. 3: end view of the invention;
FIG. 4: partial top view of the invention;
FIG. 5: a partial schematic view of a first embodiment of the invention;
FIG. 6: FIG. 5 is a cross-sectional view taken along line A-A;
FIGS. 6a-6 d: the parameter schematic diagram of the deflection angle delta of the invention;
FIG. 7: a partial schematic view of a second embodiment of the invention;
FIG. 8: schematic illustration of pins and elbows of the present invention;
FIG. 9: a partial schematic view of the present invention;
FIG. 10: a first embodiment of the bushing of the present invention is illustrated;
FIG. 11: a second embodiment of the bushing of the invention is schematically illustrated;
FIG. 12: a third embodiment of the bushing of the present invention is illustrated;
FIG. 13: a cross-sectional view of a third embodiment of the invention;
FIG. 14: FIG. 13 is a schematic view of the connecting lever;
FIG. 15: a cross-sectional view of a fourth embodiment of the invention;
FIG. 16: fig. 15 is a schematic view of a rocker arm assembly.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in light of these embodiments are intended to be within the scope of the present invention.
In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.
As shown in fig. 1 to 16, the present invention discloses a pair of single-step ultrasonic shears with a roll shearing function, comprising a first shaft member and a second shaft member, wherein the first shaft member comprises a first handheld portion 4 and a bend 1 arranged at the distal end of the first handheld portion 4, and the second shaft member comprises a second handheld portion 5, a pipe sleeve 3 arranged at the distal end of the second handheld portion 5, and a waveguide rod 2 arranged in the pipe sleeve 3 in a penetrating manner.
A hollow accommodating cavity 100 is formed inside the second handheld part 5, a transducer 6 connected with the waveguide rod 2 and a circuit board switch 7 for controlling the energy of the transducer 6 are arranged in the accommodating cavity 100, the pipe sleeve 3 penetrates through the bending part of the elbow 1, and the overlapping parts of the two sides of the pipe sleeve and the bending part are pivotally connected through a pin 8, so that the first shaft member and the second shaft member form a scissor-type structure.
The wave guide rod 2 has a blade 201 protruding from a port of the sleeve 3 and extending forward in an arc shape, the wave guide rod 2 is deflected and confined in the sleeve 3 by inserting a pin into a through hole 9 at the rear of the sleeve 3, the through hole 9 is deflected by δ degrees to a first side 2012 of the blade 201, and an inner cutting surface 2011 of the blade 201 is inclined from a second side 2013 to the first side 2012 thereof; the distal end of the elbow 1 is a working section 101 with an arc consistent with that of the tool bit 201, the distal end of the internal cutting surface 2011 is closer to the working section inner surface 1011 of the working section 101 than the proximal end of the internal cutting surface 2011, and the first side 2012 of the internal cutting surface 2011 is closer to the working section inner surface 1011 than the second side 2013; during shearing, the distal ends of the internal cutting surface 2011 and the working section inner surface 1011 are firstly contacted, and under the deformation of the cutter head 201, the internal cutting surface 2011 and the working section inner surface 1011 are gradually and tightly attached from the distal ends of the internal cutting surface 2011 and the working section inner surface 1011 to the proximal ends of the internal cutting surface 2011 and the working section inner surface 1011, and from the first side 2012 to the second side 2013.
As shown in fig. 3 and 6, a through hole 9 radially penetrating through the axes of the waveguide rod 2 and the sleeve 3 is formed between the waveguide rod 2 and the sleeve 3, a pin (not shown) is inserted into the through hole 9 to fasten the waveguide rod 2 and the sleeve 3, the through hole 9 is deflected to a first side 2012 by a degree δ so that the waveguide rod 2 is deflected and disposed in the sleeve 3, and a distal end of the internal cutting surface 2011 is closer to the inner surface 1011 of the working section than a proximal end thereof.
With reference to fig. 6a to 6D, the waveguide rod 2 is regarded as a cylindrical rod as a whole, the through hole 9 for installing the pin is regarded as a fixed position, and the bent middle section of the waveguide rod 2 is regarded as a load applying position, in a specific experiment, the outer diameter D of the cutter bar of the waveguide rod 2 is 2.6mm, the shearing pressure of the cutter bar is 16N, and the distance L from the bent middle section of the cutter bar to the rotating shaft is taken as the moment arma3.25mm, the shear modulus G35 GPa, the distance L between the middle section of the cutter bar bending and the through hole 9 of 70mm, and the like
Corner
Wherein the coefficient of torsional section is
The calculated torque angle of the tool bar of the waveguide rod is about 0.0008 degrees, the torque angle of theta is the angle of the tool bar of the waveguide rod 2 twisted around itself when stressed, and according to the calculation result, the torque angle of theta is extremely small and is ignored.
The deformation of the tool bit 201 is mainly caused by bending deflection deformation, the rotation center of the waveguide rod 2 is a circular point, the far end of the tool bit 201 is located on the circumference with the rotation center as the circle center, the deformation of the tool bit 201 is equivalent to a certain rotation radian, if the waveguide rod 2 is installed in the opposite deflection direction, the deformation of the tool bit 201 during shearing work can be offset, and the internal cutting surface 2011 of the tool bit 201 is ensured to be tightly attached to tissues.
Therefore, the whole tool bit 201 is regarded as a cylindrical rod cantilever, the supporting position between the tool bit 201 and the waveguide rod 2 is regarded as a fixed end, the connecting position 202, which is connected with the tool bit 201 and supports the tool bit 201, on the waveguide rod 2 is regarded as a fixed end, the bending middle part of the tool bit 201 is regarded as a load applying position, according to specific experimental data, the outer diameter D of the tool bit 201 is 2.6mm, the shearing pressure of the tool bit 201 is F16N, the elastic modulus is E105 GPa, and the distance L from the bending middle part of the tool bit to the connecting position 202 is 25mm, so that the bending deflection of the waveguide rod is measured
Wherein I is the moment of inertia of the waveguide rod and the tool shaft, and the moment of inertia I is
Calculating to obtain the bending deflection of the cutter head to be about Lb＝0.35mm。
Referring to fig. 6c, the pre-rotation amount of the cutting head is not less than the bending deflection deformation amount, so that the front end of the cutting head is always deformed during operation, and the inner cutting surface 2011 is kept in a contact working state of being tightly attached to tissues. In the experiment, the distance D1 between the rotation center of the waveguide rod 2 and the distal end of the tool bit 201 was 13mm, and there was
The predetermined rotation angle of the tool bit 201
Where D1 ≈ 13mm, with δ ≈ 3 °, the angle of deflection of the through-hole 9 with respect to its perpendicular in a preferred embodiment is preferably 3 °, and in other possible embodiments the angle of deflection of the through-hole 9 is 1 ° -5 °.
The distance L is configured by the total length L' of the cutter head of the waveguide rod, the cutter head is bent, the first side of the cutter head is a concave surface, and the second side of the cutter body is a convex surface; the total length L' of the cutter head meets the following formula:
wherein, a, y2Are the coordinate coefficients of the reference points, respectively, which are the (-ay) coordinates2,y2) As shown in particular in figure 6d,
the length of the waveguide rod is L', the inner diameter of the waveguide rod is H, the flaring radii of the waveguide rod and the cutter rod are R and R respectively, a point 1, a point 2 and a point 3 are arranged on the cutter rod, a point Q is a point of tangency between the cutter rod and the pipe 1, the point 1 is taken as an origin of coordinates, the cutter rod is horizontally arranged, and then a point 2 coordinate (x is x2，y2) As is known, the tool holder has two arc-shaped central points R, R and coordinates (x)R，yR)、(xr，yr) And the radius R, r are known, and,
the equation of the straight line L1 passing through the point 1 and the point 3 is set as y ═ a × x, and the equation of the straight line L2 passing through the point 3 and the point Q is set as
The distance from point 1 to line L2 is H and the distance from point R to line L2 is R, i.e.
the straight line L3 passing through point 1 and point 4 is given by the equation
The equation of the horizontal straight line L4 passing through the point 2 is y ═ y2When L3 and L4 intersect at point 4 ', the distance from point 4 ' to point 1 is the minimum value of L ',
wherein the coordinates of point 4' are (-ay)2,y2)，
In this example, when H is 5, R is 25, and the coordinates of the point R are (-15.3, -18.4), the above equation is substituted to solve the above equation, and L' ≈ 28 can be obtained.
Under the structure setting that interior cutting surface 2011 deflects relative working segment internal surface 1011, interior cutting surface 2011 because its arc structure can incline to its distal end relative working segment internal surface 1011 from its near-end, and the arc structure of tool bit 2011 can deform to a certain extent, makes when pressing from both sides tightly, the distal end of interior cutting surface and working segment internal surface contacts earlier, realizes progressively hugging closely of whole face along the extending direction of the two again, has effectively guaranteed hugging closely between interior cutting surface 2011 and the working segment internal surface 1011, improves the stability and the smoothness nature of operation.
In order to meet the requirement of longer-distance shearing, the length of the cutting edge is not less than 18mm, and preferably 20 mm; the arc diameter is 27-30mm, preferably 28mm (as in the above configuration procedure). The length of tool bit 201 has been prolonged compared conventional length, can adapt to the operation requirement of single shearing longer distance like this, makes things convenient for actual operation, improves operating efficiency and the smoothness nature, the integrality of shearing. Because the cutting head 201 is relatively slender, the arc-shaped structure of the cutting head 201 improves the rigidity of the cutting head 201, so that the cutting head has enough shearing force from the far end to the near end.
As shown in fig. 5, the first embodiment of the present invention is that the axis of the pin 8 is coincident with the axis of the sleeve 3, the working section inner surface 1011 extends obliquely from the proximal end to the distal end thereof at a side inclination angle of 0.5 ° -2 °, the inner cutting surface 2011 and the working section inner surface 1011 have a perpendicular distance between the proximal end of the working section inner surface 1011 and the axis of the sleeve 3 greater than a perpendicular distance between the distal end thereof and the axis of the sleeve 3 in the non-clamping state. Therefore, the distance between the distal ends of the internal cutting surface 2011 and the working section inner surface 1011 is further shortened, so that when the internal cutting surface 2011 and the working section inner surface 1011 are clamped and sheared gradually from the distal ends of the internal cutting surface 2011 and the working section inner surface 1011 to the proximal ends of the internal cutting surface 2011 and the working section inner surface 1011 along the extending directions of the internal cutting surface 2011 and the working section inner surface 1011, sufficient shearing force is effectively ensured to be arranged at the distal ends of the internal cutting surface 2011 and the working section inner surface 1011, and the phenomenon that the distal ends of the internal cutting surface 2011 and the working section inner surface 1011 are not jointed can be avoided.
As shown in fig. 7, a second embodiment of the present invention is different from the first embodiment in that: in the second embodiment, the axial center of the pin 8 is not coincident with the axial line of the sleeve 3, and the axial center of the pin 8 is arranged close to the elbow 1; in the clamped state, the working section inner surface 1011 is parallel to the axis of the casing 3. In the second embodiment, the distance between the distal end of the working section inner surface 1011 and the distal end of the inner cutting surface 2011 can be shortened without extending obliquely, the distance between the axial center of the pin 8 and the axis of the sleeve 3 is within 0-1mm, preferably 0.3mm, and in the case that the distance between the inner cutting surface 2011 and the distal end of the working section inner surface 1011 is consistent, the required opening angle between the first shaft member and the second shaft member in the second embodiment is smaller, and labor can be saved.
As shown in fig. 4, 5, and 9, an elastic pad 14 is disposed on the inner surface 1011 of the working section, a groove 104 is disposed at the axis of the inner surface 1011 of the working section, a convex portion (not shown) matching with the groove 103 is disposed on the back surface of the elastic pad 14, the convex portion is clamped in the groove 103, and the surface of the elastic pad 14 is serrated. The elastic pad 14 is preferably made of a silica gel material, a saw tooth structure on the surface of the elastic pad can well play a role in skid resistance and protect the inner cutting surface 2011 and the inner surface 1011 of the working section, and the elastic pad 14 is clamped with the groove 103 through a convex part on the back surface of the elastic pad 14, so that the elastic pad 14 is convenient to replace.
The sleeve 3 is formed by splicing a front sleeve 301 and a rear sleeve 302, the rear sleeve 302 is sleeved from the tail end of the waveguide rod 2 and is fixed with the waveguide rod 2 through the positioning pin, the front sleeve 301 is sleeved from the far end of the waveguide rod 2 and is fixedly connected with the rear sleeve 302, a limiting hole 303 is spliced at the joint of the front sleeve 301 and the rear sleeve 302, hinge holes 102 are arranged on two sides of the bent part of the elbow 1, the limiting hole 303 and the hinge holes 102 are coaxial, and two ends of the pin 8 are respectively penetrated in the hinge holes 102 and the limiting hole 303, so that the sleeve 3 is in pivot connection with the elbow 1. The sleeve 3 is a tube-splitting structure consisting of the front sleeve 301 and the rear sleeve 302, so that the waveguide rod 2 is convenient to mount on one hand, and the joint of the front sleeve 301 and the rear sleeve 302 is provided with a limiting hole 303 to be in pivot connection with the elbow 1 on the other hand, so that the assembly is convenient and the requirement of a larger opening angle is met.
As further shown in fig. 8, the inner end of the pin 8 is disposed in the limiting hole 303, the outer end of the pin 8 is disposed in the hinge hole 102, the inner end of the pin 8 has a larger diameter than the outer end thereof, and a T-shape having a step surface 801 is formed, and the step surface 801 abuts against the inner wall of the elbow 1. The structure enables the inner wall of the elbow 1 to limit the pin 8, so that the pin 8 is prevented from falling from the hinge hole 102, and other structures are not needed for positioning the pin, so that the assembly is convenient, the structure is simplified, and the cost is saved. In other possible embodiments, the pin 8 may have other suitable shapes.
As shown in fig. 10 and 11, the joints of the front sleeve 301 and the rear sleeve 302 are respectively provided with notches, and when the front sleeve 301 and the rear sleeve 302 are connected into a whole, the notches are spliced two by two to form the limiting hole 303. The notch may be in any suitable shape such as a semi-circle, an arc, a square, an irregular shape, etc. which can match the limiting hole 303 with the inner end of the pin 8.
As further shown in fig. 12, the limiting hole 303 may also be disposed at a joint of the front sleeve 301 or the rear sleeve 302, and the limiting hole 303 may have any suitable shape, such as a circle, a square, a U-shape, and the like.
As shown in fig. 1 and 2, the interlock button assembly includes a first button 10, a second button 11 and a connecting lever 12, where the connecting lever 12 at least includes a first link 1201 and a second link 1202, one end of the first link 1201 and one end of the second link 1202 are connected, and the other end extends in the same direction, the connecting lever 12 uses a central point of the first link 1201 as a fulcrum 1203, the first button 10 and the second button 11 are symmetrically disposed at two outer ends of the first link 1201 with respect to the fulcrum 1202, the extending end of the second link 1202 is a contact rod 1203, the contact rod 1203 is located between two contact surfaces 701 of the circuit board switch 7, and the two contact surfaces 701 are connected to the first button 10 or the second button 11 through the connecting lever 12, respectively.
As shown in fig. 13 and 14, in order to further improve the synchronization between the first link 1201 and the second link 1202, a support rod 1204 is disposed between the first link 1201 and the second link 1202, and both ends of the support rod 1204 are respectively connected to the center points of the first link 1201 and the second link 1202.
Fig. 15 and 16 show another embodiment of the interlock button assembly, which includes a first button 10, a second button 11, and a rocker arm assembly 13, wherein the rocker arm structure is composed of two first and second rocker arms connected with each other, the first rocker arm is V-shaped, and a first arm 1302 and a first connecting arm 1303 extend outwards from a first rotation center 1301 of the first rocker arm; the second rocker arm is Y-shaped, a second arm 1305, a second connecting arm 1306 and a contact arm 1307 extend from a second rotation center 1304 of the second rocker arm, the first button 10 is arranged on the first arm 1302, the second button 11 is arranged on the second arm 1305, inner surfaces of extending ends of the first connecting arm 1303 and the second connecting arm 1306 are abutted, the contact arm 1307 is located between two contact surfaces 701 of the circuit board switch 7, and the two contact surfaces 701 are respectively connected with the first button 10 or the second button 11 through the rocker arm assembly 13.
The interlocking button assembly is arranged to meet the interlocking between the first button 10 and the second button 11, so that the first button 10 and the second button 11 can be switched to high and low working positions, the creepage distance is increased, and the safety setting requirement is met.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (11)
1. Single long-range supersound scissors with shear function that heels, its characterized in that: comprises a first shaft component and a second shaft component, wherein the first shaft component comprises a first handheld part (4) and an elbow (1) arranged at the far end of the first handheld part (4), the second shaft component comprises a second handheld part (5), a pipe sleeve (3) arranged at the far end of the second handheld part (5) and a wave guide rod (2) arranged in the pipe sleeve (3) in a penetrating way, a hollow accommodating cavity (100) is formed inside the second handheld part (5), the accommodating cavity (100) is internally provided with a transducer (6) connected with the waveguide rod (2) and a circuit board switch (7) for controlling the energy of the transducer (6), the pipe sleeve (3) penetrates through the bending part of the elbow (1), and the overlapped parts of the two sides of the pipe sleeve and the bending part are pivotally connected through a pin (8), so that the first shaft component and the second shaft component form a scissor structure; the wave guide rod (2) is characterized in that a cutter head (201) extends out of a port of the pipe sleeve (3) and extends forwards in an arc shape, the wave guide rod (2) is deflected and limited in the pipe sleeve (3) by penetrating a pin in a through hole (9) at the tail of the pipe sleeve (3), the through hole (9) deflects to a first side (2012) of the cutter head (201) by delta degrees, and an inner cutting surface (2011) of the cutter head (201) inclines from a second side (2013) to the first side (2012); the distal end of the elbow (1) is provided with a working section (101) which is consistent with the radian of the cutter head (201), the distal end of the internal cutting surface (2011) is closer to the inner surface (1011) of the working section (101) than the proximal end of the internal cutting surface, and the first side (2012) of the internal cutting surface (2011) is closer to the inner surface (1011) of the working section than the second side (2013); during shearing, the far ends of the inner cutting surface (2011) and the working section inner surface (1011) are firstly contacted, and under the deformation of the cutter head (201), the inner cutting surface (2011) and the working section inner surface (1011) are gradually and tightly attached from the far ends of the inner cutting surface (2011) and the working section inner surface (1011) to the near ends of the inner cutting surface and the working section inner surface from the first side (2012) to the second side (2013).
2. The single pass ultrasonic shears with roll shear of claim 1, wherein: the deflection angle δ is set according to the following formula [ 1 ]:
wherein: lb is waveguide rod and cutter rod bending deflection; d1 is the distance between the rotation center of the waveguide rod (2) and the far end of the cutter head (201),
said LbThe value is taken by the following formula [ 2 ]:
wherein F is the shearing pressure of the tool bit (201) of the waveguide rod (2), the joint (202) of the waveguide rod (2) which is connected with the tool bit (201) and supports the tool bit is taken as a fixed end, L is the distance from the bent middle section of the tool bit (201) to the joint (202), E is the elastic modulus of the waveguide rod tool bit, and I is the inertia moment of the waveguide rod tool bit;
the I is valued by the following formula [ 3 ]:
wherein D is the outer diameter of the cutter head (201) of the waveguide rod (2).
3. The single pass ultrasonic shears with roll shear of claim 2, wherein: the distance L is configured by the total length L' of the cutter head of the waveguide rod (2), the cutter head (201) is bent, the first side (2012) of the cutter head (201) is a concave surface, and the second side (2013) of the cutter body (201) is a convex surface; the total length L' of the cutter head meets the following formula:
wherein, a, y2Are the coordinate coefficients of the reference points, respectively, which are the (-ay) coordinates2,y2) Specifically, the intersection point of a ray generated by taking the tool nose of the tool bit (201) of the waveguide rod (2) as an origin and the tool bar (201) of the waveguide rod (2) is parallel to the tangent line of the second side (2013).
4. The single pass ultrasonic shears with roll shear of claim 2, wherein: the axis of the pin (8) coincides with the axis of the sleeve (3), the inner surface (1011) of the working section extends obliquely from the near end to the far end of the working section, the side inclination angle is 0.5-2 degrees, and the vertical distance between the near end of the inner surface (1011) of the working section and the axis of the sleeve (3) is greater than that between the far end of the inner surface (2011) of the working section and the axis of the sleeve (3) in a non-clamping state of the inner cutting surface (2011) and the inner surface (1011) of the working section.
5. The single pass ultrasonic shears with roll shear of claim 2, wherein: the axis of the pin (8) is not coincident with the axis of the sleeve (3), and the axis of the pin (8) is arranged close to the elbow (1); in the clamping state, the inner surface (1011) of the working section is parallel to the axis of the sleeve (3).
6. The single pass ultrasonic shears with roll shear of claim 1, wherein: be provided with elastic pad (14) on working section internal surface (1011), the axis department of working section internal surface (1011) is provided with recess (104), the back of elastic pad (14) have with recess (103) assorted convex part, the convex part card is located in recess (103), the surface of elastic pad (14) is the cockscomb structure.
7. Single-shot ultrasonic shears with roll-shearing functionality according to claim 4 or 5, wherein: the sleeve (3) is formed by splicing a front sleeve (301) and a rear sleeve (302), the rear sleeve (302) is sleeved in from the tail end of the waveguide rod (2), and the through hole (9) is formed in the rear sleeve (302); the front sleeve (301) is sleeved in from the far end of the waveguide rod (2) and fixedly connected with the rear sleeve (302), a limiting hole (303) is formed in the joint of the front sleeve (301) and the rear sleeve (302), hinge holes (102) are formed in two sides of the bending part of the elbow (1), the limiting hole (303) and the hinge holes (102) are coaxial, and two ends of the pin (8) are respectively arranged in the hinge holes (102) and the limiting hole (303) in a penetrating mode, so that the pipe sleeve (3) is in pivot connection with the elbow (1).
8. The single pass ultrasonic shears with roll shear of claim 7, wherein: the connecting part of the front sleeve (301) and/or the rear sleeve (302) is provided with a notch, and when the front sleeve (301) and the rear sleeve (302) are connected into a whole, the notches are spliced two by two to form the limiting hole (303).
9. The single pass ultrasonic shears with roll shear of claim 1, wherein: the button assembly comprises a first button (10), a second button (11) and a connecting lever (12), the connecting lever (12) at least comprises a first connecting rod (1201) and a second connecting rod (1202), one ends of the first connecting rod (1201) and the second connecting rod (1202) are connected, the other ends of the first connecting rod (1201) and the second connecting rod (1202) extend in the same direction, the connecting lever (12) takes the central point of the first connecting rod (1201) as a fulcrum (1203), the first button (10) and the second button (11) are symmetrically arranged at two ends of the outer side of the first connecting rod (1201) relative to the fulcrum (1202), the extending end of the second connecting rod (1202) is a contact rod (1203), the contact rod (1203) is located between two contact surfaces (701) of the circuit board switch (7), and the two contact surfaces (701) are respectively connected with the first button (10) or the second button (11) through the connecting lever (12) ).
10. The single pass ultrasonic shears with roll shear of claim 9, wherein: a supporting rod (1204) is arranged between the first connecting rod (1201) and the second connecting rod (1202), and two ends of the supporting rod (1204) are respectively connected to the central points of the first connecting rod (1201) and the second connecting rod (1202).
11. The single pass ultrasonic shears with roll shear of claim 1, wherein: the interlocking button assembly is electrically connected with the circuit board switch (7), the interlocking button assembly comprises a first button (10), a second button (11) and a rocker arm assembly (13), the rocker arm structure consists of a first rocker arm and a second rocker arm which are connected in an abutting mode, the first rocker arm is V-shaped, and a first support arm (1302) and a first connecting arm (1303) extend outwards from a first rotation center (1301) of the first rocker arm; the second rocker arm is Y-shaped, a second support arm (1305), a second connecting arm (1306) and a contact arm (1307) extend from a second rotating center (1304), the first button (10) is arranged on the first support arm (1302), the second button (11) is arranged on the second support arm (1305), the inner surfaces of the extending ends of the first connecting arm (1303) and the second connecting arm (1306) are abutted, the contact arm (1307) is located between two contact surfaces (701) of the circuit board switch (7), and the two contact surfaces (701) are respectively connected with the first button (10) or the second button (11) through the rocker arm assembly (13).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262734.3A CN113907848A (en) | 2021-10-28 | 2021-10-28 | Single-time long-distance ultrasonic scissors with side-tipping shearing function |
| PCT/CN2022/087017 WO2023071072A1 (en) | 2021-10-28 | 2022-04-15 | Single-time long-distance ultrasonic scissors having roll shearing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262734.3A CN113907848A (en) | 2021-10-28 | 2021-10-28 | Single-time long-distance ultrasonic scissors with side-tipping shearing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113907848A true CN113907848A (en) | 2022-01-11 |
Family
ID=79243319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111262734.3A Pending CN113907848A (en) | 2021-10-28 | 2021-10-28 | Single-time long-distance ultrasonic scissors with side-tipping shearing function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113907848A (en) |
| WO (1) | WO2023071072A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115530929A (en) * | 2022-10-13 | 2022-12-30 | 以诺康医疗科技（苏州）有限公司 | Fine surgical instrument |
| WO2023071072A1 (en) * | 2021-10-28 | 2023-05-04 | 以诺康医疗科技（苏州）有限公司 | Single-time long-distance ultrasonic scissors having roll shearing function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070016236A1 (en) * | 2005-07-18 | 2007-01-18 | Crescendo Technologies, Llc | Balanced ultrasonic curved blade |
| US8328834B2 (en) * | 2007-10-10 | 2012-12-11 | Ethicon Endo-Surgery, Inc. | Ultrasonic device for cutting and coagulating |
| CN201920894U (en) * | 2010-11-18 | 2011-08-10 | 李超 | Ultrasonic scalpel handle |
| US9743946B2 (en) * | 2013-12-17 | 2017-08-29 | Ethicon Llc | Rotation features for ultrasonic surgical instrument |
| CN113907848A (en) * | 2021-10-28 | 2022-01-11 | 以诺康医疗科技（苏州）有限公司 | Single-time long-distance ultrasonic scissors with side-tipping shearing function |
-
2021
- 2021-10-28 CN CN202111262734.3A patent/CN113907848A/en active Pending
-
2022
- 2022-04-15 WO PCT/CN2022/087017 patent/WO2023071072A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071072A1 (en) * | 2021-10-28 | 2023-05-04 | 以诺康医疗科技（苏州）有限公司 | Single-time long-distance ultrasonic scissors having roll shearing function |
| CN115530929A (en) * | 2022-10-13 | 2022-12-30 | 以诺康医疗科技（苏州）有限公司 | Fine surgical instrument |
| CN115530929B (en) * | 2022-10-13 | 2024-04-16 | 以诺康医疗科技（苏州）有限公司 | Fine surgical instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023071072A1 (en) | 2023-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113907848A (en) | Single-time long-distance ultrasonic scissors with side-tipping shearing function | |
| US6589200B1 (en) | Articulating ultrasonic surgical shears | |
| US9387004B2 (en) | Ultrasonic cutting tool | |
| US20060058825A1 (en) | Ultrasonic surgical apparatus | |
| EP2221011A2 (en) | Ultrasonic surgical instrument | |
| JP2009523567A (en) | Surgical instruments for cutting and coagulating patient tissue | |
| JPH06343644A (en) | Surgical peritoneoscope equipment | |
| CN216754551U (en) | Single-time long-distance ultrasonic scissors with side-tipping shearing function | |
| CN116392209A (en) | Ultrasonic guide rod, ultrasonic knife handle, ultrasonic knife and ultrasonic knife system | |
| US20210052293A1 (en) | Hemostat-style ultrasonic surgical instrument with clamp force-limiting feature | |
| CN115530929B (en) | Fine surgical instrument | |
| CN216675846U (en) | Ultrasonic surgical knife bar and ultrasonic surgical instrument | |
| CN108784788A (en) | Liquid guiding ultrasound knife cutter head | |
| CN216652408U (en) | Anti-falling structure of tissue pad | |
| CN216365188U (en) | Ultrasonic knife bar | |
| CN217793243U (en) | Compression bar for shear type ultrasonic cutter and shear type ultrasonic cutter | |
| CN220530087U (en) | Ultrasonic knife tool bit | |
| CN219397468U (en) | Ultrasonic surgical instrument and ultrasonic knife system | |
| CN220477652U (en) | End effector, surgical instrument, and surgical robot | |
| CN219878227U (en) | Ultrasonic surgical instrument | |
| AU2019362083B2 (en) | Scissor style vessel sealer | |
| CN216090688U (en) | Damping type ultrasonic cutter | |
| CN219331894U (en) | Surgical instrument, jaw, cannula assembly, and superelectric hybrid energy platform | |
| TWM643365U (en) | Multifunctional blade of ultrasonic surgical instrument | |
| CN215079328U (en) | Ultrasonic knife-shearing amplitude transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |