CN108065986B - Medical tool bit structure, medical water jet instrument and forming method thereof - Google Patents
Medical tool bit structure, medical water jet instrument and forming method thereof Download PDFInfo
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- CN108065986B CN108065986B CN201611020742.6A CN201611020742A CN108065986B CN 108065986 B CN108065986 B CN 108065986B CN 201611020742 A CN201611020742 A CN 201611020742A CN 108065986 B CN108065986 B CN 108065986B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 169
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000005452 bending Methods 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000004663 powder metallurgy Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 15
- 206010052428 Wound Diseases 0.000 abstract description 9
- 208000027418 Wounds and injury Diseases 0.000 abstract description 9
- 208000002847 Surgical Wound Diseases 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012978 minimally invasive surgical procedure Methods 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- A61B17/3203—Fluid jet cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00526—Methods of manufacturing
Abstract
The invention discloses a medical cutter head structure, a medical water-jet instrument and a forming method thereof. The medical tool bit structure includes: the body part is provided with a first positioning groove which is concaved inwards on the surface and extends longitudinally, and a bending part which is arranged at the tail end of the body part; the tail end of the first positioning groove extends along the bending direction of the elbow part, and a second positioning groove is formed in the elbow part. The liquid inlet pipe is arranged in the medical cutter head structure, the top end size of the medical water-jet instrument is obviously smaller than that of the traditional Chinese medicine water-jet instrument in the existing structure, the medical water-jet instrument is miniaturized, the surgical incision of a patient in the surgical process is reduced, and the wound surface is reduced; in the preferred embodiment, when the top end of the water knife instrument in the surgical process continuously stretches into the surgical site of a patient, the transverse wound surface of the surgical site is unchanged or gradually increased along with the increase of the stretching depth, so that the recovery of the wound surface after the operation is facilitated.
Description
Technical Field
The invention relates to an instrument for generating liquid jet and a forming method of the instrument, in particular to a medical cutter head structure, a medical water jet instrument and a forming method of the medical water jet instrument.
Background
As shown in fig. 1, which is a diagram of the positional relationship between a liquid inlet pipe 1 and a tool bit fixing part 2 in the prior structure, the liquid inlet pipe 1 is fixed on the outer side of the tool bit fixing part 2, when the tool bit fixing part 2 fixed with the liquid inlet pipe 1 is assembled to form a medical water jet instrument, the top end of the medical water jet instrument is larger in size, so that the incision of an operation part in the operation process is enlarged, the wound surface is enlarged, and the rehabilitation of the operation part is not facilitated; on the other hand, the liquid inlet pipe 1 is positioned at the outer side of the cutter head fixing part 2, which is not beneficial to the recovery of waste liquid jet flow in the operation process.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a medical cutter head structure, a medical water-jet instrument and a forming method thereof.
A medical bit structure as disclosed herein in a first aspect, comprising:
a body part with a surface concave to form a first positioning groove extending longitudinally, and
A bending head part arranged at the tail end of the body part;
The tail end of the first positioning groove extends along the bending direction of the elbow part, and a second positioning groove is formed in the elbow part.
According to an embodiment of the present invention, in the cross section of the body portion, a width D1 thereof in the first positioning groove width direction is defined; in the longitudinal section of the elbow part, the width of the elbow part along the width direction of the second positioning groove is defined as D2; d1 is not less than D2.
According to an embodiment of the present invention, the outer side surfaces of the two groove walls of the first positioning groove and the outer side surface of the groove wall of the second positioning groove are both arc-shaped surfaces.
According to one embodiment of the invention, the outer side surfaces of the two groove walls of the first positioning groove are inclined surfaces; the outer side surfaces of the two groove walls of the second positioning groove, which are parallel to the direction of the groove length, are inclined surfaces.
According to an embodiment of the present invention, it further comprises:
The first positioning ribs and the second positioning ribs are oppositely arranged along the direction of the groove length of the first positioning groove;
The first positioning ribs and the second positioning ribs are respectively connected to two side walls of the first positioning groove;
The wall thickness of the first positioning rib and the wall thickness of the second positioning rib are smaller than the thickness of the groove wall of the first positioning groove, and the outer side surfaces of the first positioning rib and the second positioning rib are respectively provided with a distance with the outer side surface of the groove wall connected with the first positioning rib and the second positioning rib.
The second aspect of the invention discloses a method for forming a medical cutter head structure, which adopts a machining forming process, a powder metallurgy forming process or a metal injection forming process to form the medical cutter head structure according to the first aspect of the invention.
A medical water jet instrument as disclosed in a third aspect herein, comprising:
The medical tool bit structure, the connecting pipe, the filter and the medical tool bit structure of the first aspect of the invention
A liquid inlet tube, comprising: the pipe bending part is provided with a sealing head, and the sealing head is provided with spray holes; and
The liquid return pipe is provided with a jet flow recovery port, and the tail end of the liquid return pipe is sleeved in the connecting pipe;
The top end of the body part is connected with the jet flow recovery port;
The part of the pipe body, which is close to the bent pipe part, in the straight pipe part is positioned in the first positioning groove, the middle part of the pipe body is sleeved in the liquid return pipe, and the tail end of the pipe body penetrates out of the connecting pipe to be connected with the filter;
the bent pipe part is positioned in the second positioning groove, and the spray hole is opposite to the jet flow recovery port;
wherein, the liquid inlet pipe provides a passage for liquid to flow to the spray hole; the jet orifice enables liquid flowing through the jet orifice to form liquid jet flow to be ejected, and the jet flow recovery port receives the liquid jet flow ejected by the jet orifice.
According to an embodiment of the invention, a filter comprises:
a liquid inlet part, a filter screen plate and a liquid outlet part;
The liquid inlet part and the liquid outlet part are respectively provided with a through hole along the axial direction, and the straight pipe part is communicated with the through holes in the liquid outlet part;
the filter screen plate is arranged between the liquid inlet part and the liquid outlet part.
A method of molding a medical water jet instrument as disclosed in the fourth aspect herein, comprising:
Respectively forming the medical tool bit structure and the connecting pipe according to the first aspect of the invention;
bending liquid inlet pipe, liquid inlet pipe includes: the pipe bending part is provided with a sealing head, and the sealing head is provided with spray holes;
Bending back the liquid return pipe, wherein the liquid return pipe is provided with a jet flow recovery port;
the liquid inlet pipe is inserted into the liquid return pipe, and the middle part pipe body of the straight pipe part is sleeved into the liquid return pipe;
Connecting a connecting pipe to the tail end of the liquid return pipe, and penetrating the tail end of the straight pipe part out of the connecting pipe;
Assembling a medical tool bit structure, wherein the top end of the body part is connected with the jet recovery port, a part of the pipe body, which is close to the bent pipe part, in the straight pipe part is positioned in the first positioning groove, the bent pipe part is positioned in the second positioning groove, and the jet holes are opposite to the jet recovery port;
The filter is connected to the tail end of the straight pipe part.
According to an embodiment of the present invention, the medical blade structure according to the first aspect of the present invention is formed using a machining process, a powder metallurgy forming process or a metal injection forming process.
When the medical cutter head structure is used for positioning the liquid inlet pipe, the liquid inlet pipe is arranged in the medical cutter head structure, and when the structural size of the medical cutter head is required to be fixed, the top end size of the medical water cutter instrument is obviously smaller than that of the traditional Chinese medicine water cutter instrument in the existing structure, and the medical water cutter instrument is miniaturized, so that the surgical incision of a patient in the surgical process is reduced, and the wound area is reduced; and further, because the width in the width direction of the first positioning groove is not smaller than the width in the width direction of the second positioning groove, when the top end of the water knife instrument in the operation process stretches into the operation part of a patient, the incision of the operation part is unchanged or gradually increased along with the increase of the stretching depth of the water knife instrument, and the rehabilitation of the postoperative wound surface of the patient is more facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a diagram of the positional relationship between a liquid inlet tube and a medical cutter head structure in the prior art;
FIG. 2 is a schematic view of a structure of a traditional Chinese medical tool bit according to an embodiment;
FIG. 3 is a schematic view of another embodiment of a traditional Chinese medical tool bit structure;
FIG. 4 is a top view of a tool tip configuration for use in traditional Chinese medicine according to an embodiment;
FIG. 5 is a schematic view of a cutter head structure for Chinese medicine in accordance with the second embodiment;
FIG. 6 is another schematic view of a cutter head structure for Chinese medicine in the second embodiment;
FIG. 7 is a plan view of a cutter head structure for Chinese medicine according to a second embodiment;
FIG. 8 is a schematic diagram of a third embodiment of a water knife device for traditional Chinese medicine;
FIG. 9 is another schematic view of a water knife device for traditional Chinese medicine in the third embodiment;
FIG. 10 is a schematic view of a third embodiment of a water knife device for traditional Chinese medicine;
FIG. 11 is an exploded view of a water knife device for traditional Chinese medicine in accordance with the third embodiment;
FIG. 12 is a schematic view of a third embodiment of a water knife device for traditional Chinese medicine;
FIG. 13 is another schematic view of a water knife device for traditional Chinese medicine in the third embodiment;
FIG. 14 is a schematic view of a third embodiment of a water knife device for traditional Chinese medicine;
fig. 15 is an exploded schematic view of a water knife device for traditional Chinese medicine in the third embodiment.
Reference numerals illustrate:
1. a liquid inlet pipe; 2. a cutter head fixing part; 3. a medical cutter head structure; 31. a body portion; 32. a elbow part; 33. a first positioning groove; 34. a second positioning groove; 35. a first positioning rib; 36. second positioning ribs; 4. medical water knife apparatus; 41. a connecting pipe; 411. a main pipe body; 412. a sub-pipe body; 42. a filter; 421. a liquid inlet part; 422. a filter screen plate; 423. a liquid outlet part; 424. through holes of the liquid inlet part; 431. a straight pipe section; 431a, a first sub straight pipe; 431b, a second sub straight pipe; 431c, a third sub-straight tube; 431d, fourth sub straight pipe; 432. a bent pipe part; 4321. a seal head; 4322. a spray hole; 44. a liquid return pipe; 441. the jet flows back to the closing port; A. the enlarged bent pipe part.
Detailed Description
Various embodiments of the invention are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the invention. That is, in some embodiments of the invention, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention relates to a medical tool bit structure, a medical water jet instrument and a related design of a forming method thereof. In the first aspect, the medical tool bit structure is very suitable for various surgical minimally invasive operations, is used for positioning the liquid inlet pipe, facilitates high-pressure liquid to be introduced into the liquid inlet pipe, and cuts, ablates, peels off or clears away tissues or organs of a patient body and the like; in a second aspect, the medical bit structure of the present invention is also applicable to other instruments to be cut or perforated for positioning other fluid intake components similar to a fluid intake tube; of course, the medical bit structure of the present invention may also be adapted for use with other fluid ejection devices having a variety of configurations and for a variety of purposes to position other fluid intake components. After the medical cutter head structure of the invention locates the liquid inlet pipe and forms the medical water cutter instrument of the invention, the medical water cutter instrument can be used in various surgical minimally invasive operations and can also be used on other objects to be cut or perforated; when the medical cutter head structure of the invention is used for positioning other liquid inlet components and being used in other liquid injection devices with various structures and various purposes, the liquid introduced into the liquid inlet components can be properly selected to be high-pressure liquid or common liquid according to the use purposes. In addition, the embodiment of the medical water jet scalpel instrument provided by the invention can be combined with the external holding piece with various structures, so that an operator can hold the medical water jet scalpel instrument comfortably by hands, and the medical water jet scalpel instrument can be used for various surgical minimally invasive operations or other objects to be cut and punched more conveniently. In order to facilitate the understanding of the present invention, the following description will further describe the medical blade structure, the medical water blade device and the forming method thereof, and the benefits thereof in detail, in terms of four specific embodiments. In the following four specific embodiments, the medical water jet instrument is described by taking as an example that the medical water jet instrument is used in various surgical minimally invasive operations after the liquid inlet pipe is positioned by the medical knife head structure, and the high-pressure liquid is introduced into the liquid inlet pipe, but this does not limit the present invention. When common liquid is introduced, the mode of positioning the liquid inlet pipe by the medical cutter head structure and positioning other liquid inlet parts by the medical cutter head structure form a water cutter instrument, and the generated benefits are basically the same as those of the water cutter instrument when high-pressure liquid is introduced, but the use purpose is different. Herein, when the liquid is high-pressure liquid, the high-pressure liquid includes high-pressure water flow or high-pressure physiological saline flow or other high-pressure liquid flow, and the type of the high-pressure liquid in the liquid inlet pipe is flexibly selected according to the type or physical and chemical properties of the object to be cut when the medical water knife device works.
Embodiment one:
Referring to fig. 2-4 together, the present embodiment provides a medical cutter structure 3. The medical bit structure 3 includes: the body 31 and the elbow 32, the end of the body 31 extends towards the direction having a certain included angle to form the elbow 32, where the included angle is any angle between greater than zero degrees and less than one hundred eighty degrees, preferably ninety degrees, and the elbow 32 has a bending curvature. One surface of the body 31 is recessed inward to form a first positioning groove 33, and the first positioning groove 33 extends longitudinally, which is a direction parallel to a direction in which a groove length of the first positioning groove 33 is located. The first positioning groove 33 has two opposite groove walls and a bottom wall. The end of the first positioning groove 33 extends along the bending direction of the elbow 32, and a second positioning groove 34 is formed in the elbow 32, and the second positioning groove 34 has two opposite groove walls, a bottom wall and another groove wall with two ends respectively connected with the two groove walls. Further, in the cross section of the body portion 31, a width thereof in the groove width direction of the first positioning groove 33 is defined as D1; in the longitudinal section of the elbow portion 32, a width D2 along the groove width direction of the second positioning groove 34 is defined; d1 is not smaller than D2, and the transverse cross section of the body 31 is a cross section obtained by cutting the body 31 perpendicular to the groove length extending direction of the first positioning groove 33; the vertical cross section of the elbow 32 is a cross section obtained by cutting the elbow 32 along a direction parallel to the groove length extension direction of the first positioning groove 33.
Referring to fig. 2 and 3, in the medical cutter structure 3 provided in the present embodiment, the outer side surfaces of the two groove walls of the first positioning groove 33 and the groove wall of the second positioning groove 34 are arc surfaces, the curved direction of the arc outer side surfaces of the two groove walls of the first positioning groove 33 is far away from the inner side surface of the groove wall of the first positioning groove 33 and protrudes outwards, and the curved direction of the arc outer side surface of the groove wall of the second positioning groove 34 is far away from the inner side surface of the groove wall of the second positioning groove 34 and protrudes outwards, refer to fig. 2-3 specifically. The first positioning groove 33 has equal spacing between the outer side surfaces of the two opposite groove walls, and the outer side surfaces of the two groove walls are arc-shaped surfaces, and the longitudinal section of the body 31 is rectangular, d1=d2. Along the direction from the top end of the body 31 to the end, the distance between the outer side surfaces of the two opposite groove walls of the first positioning groove 33 is gradually reduced, and when the outer side surfaces of the two groove walls of the first positioning groove 33 and the groove wall of the second positioning groove 34 are arc-shaped surfaces, the longitudinal section of the body 31 is trapezoid, and D1 is larger than D2.
Referring back to fig. 2-4, the medical bit structure 3 further comprises: a first positioning rib 35 and a second positioning rib 36 which are oppositely arranged along the direction of the groove length of the first positioning groove 33; the first positioning ribs 35 and the second positioning ribs 36 are respectively connected to two side walls of the first positioning groove 33; the wall thickness of the first positioning rib 35 and the second positioning rib 36 is smaller than the wall thickness of the first positioning groove 33, and the outer side surfaces of the first positioning rib and the second positioning rib are respectively spaced from the outer side surface of the groove wall connected with the first positioning rib and the second positioning rib, preferably, the spacing is greater than or equal to the wall thickness of the liquid return pipe in the medical water jet instrument, and more preferably, the spacing is equal to the wall thickness of the liquid return pipe in the medical water jet instrument. The first positioning rib 35 and the second positioning rib 36 are used to position the body 31 in a liquid return pipe described later. Wherein, the body portion 31, the elbow portion 32, the first positioning rib 35, and the second positioning rib 36 are integrally formed.
In addition, in this example, the medical bit structure 3 may be formed by a machining process, a powder metallurgy process, or a metal injection process.
When the medical cutter head structure 3 is used for positioning the liquid inlet pipe 1, the liquid inlet pipe 1 is arranged in the medical cutter head structure 3, when the size of the medical cutter head structure 3 is certain, the size of the top end of the medical water-jet instrument 4 is obviously smaller than that of the top end of the traditional Chinese medicine water-jet instrument 4 in the existing structure, and the medical water-jet instrument is miniaturized, so that the wound area of a patient in the operation process is reduced; and, because the width in the groove width direction of the first positioning groove 33 is not smaller than the width in the groove width direction of the second positioning groove 34, when the top end of the water knife instrument 4 in the operation process continuously stretches into the operation part of the patient, the transverse wound area of the operation part is unchanged or gradually increased along with the increase of the stretching depth, and the recovery of the wound surface after the operation of the patient is more facilitated. The groove wall of the first positioning groove and the groove wall of the second positioning groove are formed into arc-shaped surfaces or inclined surfaces, and cutting of the operation knife edge is facilitated.
Embodiment two:
Referring to fig. 5-7, the present example provides a medical bit structure 3 of another configuration. In this embodiment, the outer sides of the two groove walls of the first positioning groove 33 are inclined planes; the outer side surfaces of the two groove walls of the second positioning groove 34 parallel to the direction of the groove length are inclined surfaces. One of the groove walls of the first positioning groove 33 and one of the groove walls of the second positioning groove 34, which are positioned on the same side of the longitudinal section of the medical cutter head structure 3, are inclined at the same plane, and refer to fig. 5-7. Further, along the direction from the top end of the body 31 to the end, the distance between the outer sides of the first positioning groove 33 and the two groove walls is gradually reduced, the outer sides of the two groove walls of the first positioning groove 33 are inclined planes, the longitudinal section of the body 31 is trapezoid, and D1 is larger than D2.
Embodiment III:
The embodiment provides a medical water jet device 4, referring to fig. 8-15, wherein in the medical water jet device 4 shown in fig. 8-11, a medical cutter head structure 3 is the same as that of the first embodiment; in the medical water jet device 4 shown in fig. 12-15, the medical blade structure 3 is the same as in the embodiment.
In this example, the medical water jet instrument 4 comprises: medical tool bit structure 3, connecting tube 41, filter 42, feed liquor pipe 1 and return liquor pipe 44.
The medical bit structure 3 is described in the first or second embodiment, and will not be described here again.
A liquid inlet pipe 1, comprising: a communicating bent pipe portion 432 and a straight pipe portion 431. The elbow 432 has a sealing head 4321, and the sealing head 4321 is provided with a nozzle 4322, see an enlarged elbow schematic diagram a in fig. 11. The straight pipe portion 431 has four sub-straight pipes integrally formed, or a pipe body is bent to form a straight pipe portion 431 with four sub-straight pipes, as shown in fig. 11, one end of a first sub-straight pipe 431a is communicated with a bent pipe portion 432, the other end of the first sub-straight pipe 431a is communicated with a second sub-straight pipe 431b, the other end of the second sub-straight pipe 431b is communicated with a third sub-straight pipe 431c, the other end of the third sub-straight pipe 431c is communicated with a fourth sub-straight pipe 431d, an included angle is formed between the first sub-straight pipe 431a and the second sub-straight pipe 431b, an included angle is formed between the second sub-straight pipe 431b and the third sub-straight pipe 431c, an included angle is formed between the third sub-straight pipe 431c and the fourth sub-straight pipe 431d, and the four sub-straight pipes all have pipe walls and pipe inner cavities. The seal 4321 is a convex seal, such as a circular arc-shaped seal or a conical seal, and can smoothly transition the high-pressure liquid introduced into the elbow 432 to the spray hole 4322. The liquid inlet pipe 1 is used for providing a flow path for high-pressure liquid to flow to the spray hole 4322, the liquid inlet pipe 1 can be made of various materials, no matter what materials are selected to make the liquid inlet pipe 1, and no matter what way is adopted to form the liquid inlet pipe 1, when the high-pressure liquid is introduced, the liquid inlet pipe 1 must have enough compressive strength so that the high-pressure liquid with the pressure required by the operation of the medical water jet device 4 can be delivered to the spray hole 4322, so that the spray hole 4322 forms a liquid jet, the compressive strength of the liquid inlet pipe 1 can be equal to or greater than the pressure of the high-pressure liquid used by the operation of the medical water jet device 4, preferably the pressure of the high-pressure liquid used by the operation of the medical water jet device 4 is greater than the pressure of the high-pressure liquid used by the operation of the medical water jet device 4, and the pressure of the high-pressure liquid used by the operation of the medical water jet device 4 is dependent on the design of the spray hole 4322, the hardness or strength of a tissue or an object to be cut, ablated or eliminated, and the like. The liquid inlet pipe 1 can be a round pipe, an elliptic pipe, a square pipe or a pipe with other shapes.
The liquid return tube 44 has a jet flow recovery port 441 for recovering the liquid jet flow ejected from the nozzle 4322 in the minimally invasive surgery. The shape of the liquid return pipe 44 matches the shape of the first sub-straight pipe 431a and the second sub-straight pipe 431b when they communicate.
The connection pipe 41 has a main pipe body 411, and a branch pipe body 412 communicating with the main pipe body 411 is provided on a side wall of the main pipe body 411.
The filter 42 may be of a prior art design, or the filter 42 may include: a liquid inlet 421, a filter 422, and a liquid outlet 423; the liquid inlet part 421 and the liquid outlet part 423 are provided with a through hole along the axial direction, and the straight pipe part 431 is communicated with the through hole in the liquid outlet part 423; the filter screen 422 is disposed between the liquid inlet 421 and the liquid outlet 423.
The top end of the body part 31 of the medical tool bit structure 3 is connected with the jet recovery port 441; the bent pipe portion 432 of the liquid inlet pipe 1 is positioned in the second positioning groove 34, the spray hole 4322 is opposite to the spray hole back to the port 441, a part of the pipe body, which is close to the bent pipe portion 432, of the straight pipe portion 431, namely a first sub-straight pipe 431a is positioned in the first positioning groove 33, the middle part of the pipe body, namely a second sub-straight pipe 431b, is sleeved in the liquid return pipe 44, the tail end of the pipe body penetrates out of the connecting pipe 41, so that a part of a third sub-straight pipe 431c is positioned in the pipe separating body 412, and a fourth sub-straight pipe 431d is connected with the filter 42; the end of the liquid return pipe 44 is sleeved in the connecting pipe 41.
When the medical water jet device 4 works, the liquid inlet portion 421 of the filter 42 is communicated with an external high-pressure liquid supply source such as a high-pressure pump, the through holes in the liquid inlet portion 421 are in fluid communication with the high-pressure pump through a high-pressure liquid conveying channel such as a pressure pipe, after the high-pressure liquid passes through the high-pressure pump, the high-pressure liquid flows into the filter screen 422 from the through holes in the liquid inlet portion 421, and flows into the liquid inlet pipe 1 from the through holes 424 in the liquid inlet portion after being filtered, the high-pressure liquid continuously flows into the spray holes 4322 from the inner cavities of the fourth sub-straight pipe 431d, the third sub-straight pipe 431c, the second sub-straight pipe 431b, the first sub-straight pipe 431a and the bent pipe 432 in sequence, and the high-pressure liquid jet generated by the spray holes 4322 forms various liquid jet sprays with different shapes when passing through the spray holes 4322, so that the medical water jet device 4 can perform various surgical minimally invasive operations or cutting and perforating actions of various other objects, as can be understood by those skilled in the art, when the medical water jet device 4 is used for various surgical minimally invasive operations, various high-pressure pumps can be applied to the embodiment, but are not limited to the pump and the pump; the orifice 4322 may have a suitable shape, such as a circular cross-section, an oval cross-section, or a rectangular cross-section, or other cross-sectional shape, such that the high pressure fluid, when flowing through the orifice 4322, may form a fluid jet of a different shape, as appropriate for a particular need, which may be used in minimally invasive surgical procedures to cut, ablate, strip, or remove various tissues or organs of the patient's body, or to perform other cutting or punching actions on the object to be cut. The size of the orifice 4322 is designed according to the amount of liquid jet required for operation. The liquid jet ejected from the nozzle 4322 flows into the liquid return pipe 44 through the jet recovery port 441, flows through the liquid return pipe 44 to the main pipe body 411 of the connection pipe 41, and the main pipe body 411 can be connected to an external liquid recovery device to recover the liquid jet ejected from the nozzle 4322.
Embodiment four:
the present embodiment provides a molding process of the medical water jet instrument 4 described in the third embodiment. Comprising the following steps:
Respectively forming the medical cutter head structure 3 and the connecting pipe 41;
bending liquid inlet pipe 1, liquid inlet pipe 1 includes: the communicated bent pipe part 432 and the straight pipe part 431, the bent pipe part 432 is provided with a sealing head 4321, and the sealing head 4321 is provided with a spray hole 4322; specifically, a tube body with a proper specification is selected, and is bent to form a straight tube portion 431 and a bent tube portion 432 with four sub straight tubes;
The liquid return pipe 44 is bent, and the liquid return pipe 44 is provided with a jet flow recovery port 441; the shape of the liquid return pipe 44 matches the shape of the first sub-straight pipe 431a and the second sub-straight pipe 431b when they communicate.
The liquid inlet pipe 1 is inserted into the liquid return pipe 44, so that the middle part pipe body of the straight pipe part 431 is sleeved into the liquid return pipe 44;
The connecting pipe 41 is connected to the tail end of the liquid return pipe 44, and the tail end of the straight pipe portion 431 penetrates out of the connecting pipe 41;
Assembling a medical tool bit structure 3, wherein the top end of a body part 31 is connected with a jet recovery port 441, a part of a pipe body, close to a bent pipe part 432, in a straight pipe part 431 is positioned in a first positioning groove 33, the bent pipe part 432 is positioned in a second positioning groove 34, and a jet hole 4322 is opposite to the jet recovery port 441;
The filter 42 is connected to the end of the straight tube portion 431.
In the above process, the molded medical cutter head structure 3, the molded connecting pipe 41, the bent liquid inlet pipe 1 and the bent liquid return pipe 44 are not arranged in sequence.
Wherein, the medical tool bit structure 3 is formed by any one of machining forming, powder metallurgy forming process and metal injection forming process.
The filter 42 may be of conventional design or may be formed by the following process: through holes are formed in the axial direction of the liquid inlet portion 421 and the liquid outlet portion 423, a filter screen 422 is arranged between the liquid inlet portion 421 and the liquid outlet portion 423, the liquid inlet portion 421 and the liquid outlet portion 423 are fixedly connected, and the tail end of the straight pipe portion 431 penetrates out of the connecting pipe 41 to be connected with the liquid outlet portion 423 and is communicated with the through holes 424 of the liquid inlet portion. The two end surfaces of the liquid inlet 421 and the liquid outlet 423 are fixedly connected by welding. The tail end of the straight tube portion 431 is connected to the liquid outlet portion 423, and preferably the liquid outlet portion 423 is connected by laser spot welding.
When the liquid inlet pipe 1 is inserted into the liquid return pipe 44, the fourth sub-straight pipe 431d may be first inserted into the end of the liquid return pipe 44, after the insertion of the liquid inlet pipe 1 is completed, the bent pipe portion 432 is positioned in the second positioning groove 34, and a portion of the straight pipe portion 431 close to the bent pipe portion 432 is positioned in the first positioning groove 33. The bent pipe portion 432 is positioned in the second positioning groove 34 by laser spot welding between the bent pipe portion 432 and the second positioning groove 34. The portion of the straight pipe portion 431 adjacent to the bent pipe portion 432 is positioned in the first positioning groove 33 by laser spot welding between the portion of the pipe body adjacent to the bent pipe portion 432 and the first positioning groove 33. At least one outer side of the body 31 is welded with the inner wall of the liquid return pipe 44 by laser spot welding, and the top end of the body 31 is connected with the jet recovery port 441; preferably, the top end of the body 31 is connected to the jet flow recovery port 441 by laser spot welding between the first positioning rib 35 or the second positioning rib 36 provided on both the groove walls of the first positioning groove 33 and the liquid return pipe 44, and the pipe wall thickness of the liquid return pipe 44 is equal to the interval between the outer side surface of the first positioning rib 35 and the outer side surface of the groove wall connected with the first positioning rib 35.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present invention, should be included in the scope of the claims of the present invention.
Claims (7)
1. A medical cutter head structure, comprising:
a body part with a surface concave to form a first positioning groove extending longitudinally, and
A bent head part arranged at the tail end of the body part;
The tail end of the first positioning groove extends along the bending direction of the elbow part, and a second positioning groove is formed in the elbow part; the second positioning groove is provided with two opposite groove walls, a bottom wall and another groove wall, wherein the two ends of the other groove wall are respectively connected with the two groove walls;
In the cross section of the body part, defining the width of the body part along the width direction of the first positioning groove as D1; in the longitudinal section of the elbow part, defining the width of the elbow part along the width direction of the second positioning groove as D2; d1 is not less than D2; the outer side surfaces of the two groove walls of the first positioning groove and the outer side surfaces of the groove walls of the second positioning groove are arc-shaped surfaces.
2. The medical bit structure of claim 1, further comprising:
the first positioning ribs and the second positioning ribs are oppositely arranged along the direction of the groove length of the first positioning groove;
the first positioning ribs and the second positioning ribs are respectively connected to two side walls of the first positioning groove;
The wall thickness of the first positioning rib and the wall thickness of the second positioning rib are smaller than the thickness of the groove wall of the first positioning groove, and the outer side faces of the first positioning rib and the second positioning rib are respectively provided with a distance with the outer side face of the groove wall connected with the first positioning rib and the second positioning rib.
3. A method for forming a medical cutter head structure is characterized in that: the medical bit structure of any one of claims 1-2 is formed using a machining process, a powder metallurgy process, or a metal injection process.
4. A medical water jet instrument, comprising:
the medical bit structure, connection tube, filter, and medical bit of any one of claims 1-2
A liquid inlet tube, comprising: the pipe bending part is provided with a sealing head, and the sealing head is provided with spray holes; and
The liquid return pipe is provided with a jet flow recovery port, and the tail end of the liquid return pipe is sleeved in the connecting pipe;
The top end of the body part is connected with the jet flow recovery port;
The part of the pipe body, which is close to the bent pipe part, in the straight pipe part is positioned in the first positioning groove, the middle part of the pipe body is sleeved in the liquid return pipe, and the tail end of the pipe body penetrates out of the connecting pipe to be connected with the filter;
the bent pipe part is positioned in the second positioning groove, and the spray hole is opposite to the jet flow recovery port;
wherein, the liquid inlet pipe provides a passage for liquid to flow to the spray hole; the jet orifice enables liquid flowing through the jet orifice to form liquid jet flow to be ejected, and the jet flow recovery port receives the liquid jet flow ejected by the jet orifice.
5. The medical water jet apparatus of claim 4, wherein said filter comprises:
a liquid inlet part, a filter screen plate and a liquid outlet part;
The liquid inlet part and the liquid outlet part are respectively provided with a through hole along the axial direction, and the straight pipe part is communicated with the through holes in the liquid outlet part;
the filter screen plate is arranged between the liquid inlet part and the liquid outlet part.
6. A method for forming a medical water jet instrument, comprising the steps of:
forming the medical cutter head structure and the connecting pipe according to any one of claims 1-2 respectively;
bending liquid inlet pipe, liquid inlet pipe includes: the pipe bending part is provided with a sealing head, and the sealing head is provided with spray holes;
Bending back the liquid return pipe, wherein the liquid return pipe is provided with a jet flow recovery port;
the liquid inlet pipe is inserted into the liquid return pipe, and the middle part pipe body of the straight pipe part is sleeved into the liquid return pipe;
Connecting a connecting pipe to the tail end of the liquid return pipe, and penetrating the tail end of the straight pipe part out of the connecting pipe;
Assembling a medical tool bit structure, wherein the top end of the body part is connected with the jet recovery port, a part of the pipe body, which is close to the bent pipe part, in the straight pipe part is positioned in the first positioning groove, the bent pipe part is positioned in the second positioning groove, and the jet holes are opposite to the jet recovery port;
The filter is connected to the tail end of the straight pipe part.
7. The medical blade apparatus molding method as claimed in claim 6, wherein the medical blade structure as claimed in any one of claims 1 to 2 is molded using a machining molding process, a powder metallurgy molding process or a metal injection molding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020742.6A CN108065986B (en) | 2016-11-14 | 2016-11-14 | Medical tool bit structure, medical water jet instrument and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020742.6A CN108065986B (en) | 2016-11-14 | 2016-11-14 | Medical tool bit structure, medical water jet instrument and forming method thereof |
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| CN108065986A CN108065986A (en) | 2018-05-25 |
| CN108065986B true CN108065986B (en) | 2024-04-23 |
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| WO2000069348A1 (en) * | 1999-05-18 | 2000-11-23 | Hydrocision, Inc. | Fluid jet surgical instruments |
| US6511493B1 (en) * | 2000-01-10 | 2003-01-28 | Hydrocision, Inc. | Liquid jet-powered surgical instruments |
| WO2006066160A1 (en) * | 2004-12-14 | 2006-06-22 | Hydrocision, Inc. | Liquid jet surgical instrument |
| WO2007087404A2 (en) * | 2006-01-24 | 2007-08-02 | Hydrocision, Inc. | Liquid jet surgical instrument having a distal end with a selectively controllable shape |
| CN101657163A (en) * | 2006-12-29 | 2010-02-24 | 史密夫和内修有限公司 | Wound bed preparation |
| CN105476692A (en) * | 2016-01-29 | 2016-04-13 | 中国人民解放军第二军医大学 | Debridement water tool bit system capable of being reused |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2495911C (en) * | 2001-11-21 | 2011-06-07 | Hydrocision, Inc. | Liquid jet surgical instruments incorporating channel openings aligned along the jet beam |
| US8162966B2 (en) * | 2002-10-25 | 2012-04-24 | Hydrocision, Inc. | Surgical devices incorporating liquid jet assisted tissue manipulation and methods for their use |
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- 2016-11-14 CN CN201611020742.6A patent/CN108065986B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000069348A1 (en) * | 1999-05-18 | 2000-11-23 | Hydrocision, Inc. | Fluid jet surgical instruments |
| US6511493B1 (en) * | 2000-01-10 | 2003-01-28 | Hydrocision, Inc. | Liquid jet-powered surgical instruments |
| WO2006066160A1 (en) * | 2004-12-14 | 2006-06-22 | Hydrocision, Inc. | Liquid jet surgical instrument |
| WO2007087404A2 (en) * | 2006-01-24 | 2007-08-02 | Hydrocision, Inc. | Liquid jet surgical instrument having a distal end with a selectively controllable shape |
| CN101657163A (en) * | 2006-12-29 | 2010-02-24 | 史密夫和内修有限公司 | Wound bed preparation |
| CN105476692A (en) * | 2016-01-29 | 2016-04-13 | 中国人民解放军第二军医大学 | Debridement water tool bit system capable of being reused |
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| Publication number | Publication date |
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| CN108065986A (en) | 2018-05-25 |
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