CN113995548A - Novel artificial anal sphincter of constant force centre gripping device - Google Patents
Novel artificial anal sphincter of constant force centre gripping device Download PDFInfo
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- CN113995548A CN113995548A CN202111299202.7A CN202111299202A CN113995548A CN 113995548 A CN113995548 A CN 113995548A CN 202111299202 A CN202111299202 A CN 202111299202A CN 113995548 A CN113995548 A CN 113995548A
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- 210000005070 sphincter Anatomy 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 17
- 229920002529 medical grade silicone Polymers 0.000 claims 1
- 239000004945 silicone rubber Substances 0.000 claims 1
- 238000002324 minimally invasive surgery Methods 0.000 abstract 1
- 230000000968 intestinal effect Effects 0.000 description 10
- 229920002379 silicone rubber Polymers 0.000 description 9
- 208000034347 Faecal incontinence Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 210000000936 intestine Anatomy 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 206010028851 Necrosis Diseases 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000017074 necrotic cell death Effects 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 206010021639 Incontinence Diseases 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000000302 ischemic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010009944 Colon cancer Diseases 0.000 description 1
- 208000001333 Colorectal Neoplasms Diseases 0.000 description 1
- 206010049119 Emotional distress Diseases 0.000 description 1
- 241000489861 Maximus Species 0.000 description 1
- 206010067268 Post procedural infection Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001338 necrotic effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009256 replacement therapy Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
- A61F2/0031—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra
- A61F2/0036—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra implantable
Landscapes
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a novel constant-force clamping artificial anal sphincter device, which relates to the technical field of medical instruments and comprises a revolute pair, a connecting rod mechanism, a device shell and an outer clamping plate, wherein the connecting rod mechanism is arranged in the device shell, the revolute pair drives the connecting rod mechanism, and the tail end of the connecting rod mechanism is connected with the outer clamping plate. The invention greatly reduces the system complexity of the far center movement mechanism, can be expanded on the basis, generates the rotational freedom degree of the whole mechanism around the far center, and meets the requirement of the freedom degree required by minimally invasive surgery.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a novel constant-force clamping artificial anal sphincter device.
Background
Fecal incontinence, anal incontinence, refers to the condition of fecal dysfunction due to involuntary outflow of feces and gases. Fecal incontinence, while not directly life threatening, can cause physical and mental distress to the patient, severely interfering with the patient's normal life and work. The prevalence of anal incontinence varies from country to country, but is on the whole increasing, which is associated with aging of the population. According to the statistics literature in 2012, the incidence of colorectal cancer in China is estimated to be 17.2 ten thousand, so the prevalence rate of anal incontinence is also increased.
Conservative surgical treatment for fecal incontinence includes (1) anal sphincter repair, which involves fully dissecting the broken ends of the defective sphincter and terminating or folding sutures with absorbable thread to restore the anatomical structure of the sphincter; (2) anal sphincteroplasty, which refers to the consideration of transferring the gracilis or gluteus maximus to the perianal canal, forming a new perianal ring muscle, replacing or enhancing sphincter function. The effective rate of the two types of operation type five-year follow-up treatment is reduced to 10-14%, the contraction force of muscles is weakened to different degrees along with the time extension, and the long-term curative effect is poor. The artificial anal sphincter is used as a dynamic sphincter replacement therapy which can be controlled by a patient, can obviously improve the fecal incontinence symptoms of the patient without complications, and provides an important choice for the fecal incontinence therapy. The first Artificial anal Sphincter (ABS) developed by American Medical Systems (AMS) was the first one to be used clinically. The ABS artificial anal sphincter consists of the following three parts: a liquid storage bag, a miniature manual water pump and an expandable clamping device. However, the following drawbacks of this device have resulted in post-operative infections and mechanical failure of up to 50%: (1) when the expandable clamping device clamps the intestinal canal, the stress is not uniform, which leads to tissue necrosis. (2) The liquid storage bag, the miniature manual water pump and the expandable clamping device are not integrated, so that the physiological saline and tissue fluid in the liquid storage bag permeate, the expandable clamping device is over expanded, and the device fails.
Therefore, those skilled in the art have been devoted to develop a novel constant-force clamped artificial anal sphincter device, which can solve the problems of device failure caused by insufficient clamping stress of the intestinal canal and ischemic necrosis caused by excessive clamping stress by applying a constant force, and reduce the probability of necrotic infection of intestinal canal tissue.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problems to be solved by the present invention are: how to solve the unmatched problem of current artificial anal sphincter device and intestines tube histology.
In order to achieve the purpose, the invention provides a novel constant-force clamping artificial anal sphincter device which comprises a revolute pair, a link mechanism, a device shell and an outer clamping plate, wherein the link mechanism is arranged in the device shell, the revolute pair drives the link mechanism, and the tail end of the link mechanism is connected with the outer clamping plate.
Furthermore, the rotating pair comprises a knob and a screw rod, the screw rod is in clearance fit with the through hole in the left side of the device shell, and the knob rotates to drive the screw rod to move transversely.
Further, the link mechanism comprises a first link, a second link, a third link, a fourth link, a fifth link, a sixth link and a seventh link which are hinged with each other, the screw rod is connected with the central hole of the first link, and the second link, the third link, the fourth link, the fifth link, the sixth link and the seventh link are symmetrically distributed.
Furthermore, the middle through holes of the third connecting rod and the sixth connecting rod are concentric with the upper and lower through holes of the main view surface of the device shell and are connected by screws; the through holes at the left ends of the fourth connecting rod and the fifth connecting rod are concentric with the two through holes in the middle of the main viewing surface of the device shell and are connected through screws.
Furthermore, the outer clamping plate comprises a first outer clamping plate and a second outer clamping plate, and the center distance of the through hole in the front view of the device shell is the same as the center distance of the circular holes of the first outer clamping plate and the second outer clamping plate.
Furthermore, the three connecting rods and the four connecting rods have two through holes at the right ends which are respectively concentric with the two through holes at the left side of the outer clamping plate I and are connected with each other through screws, and the five connecting rods and the six connecting rods have two through holes at the right ends which are respectively concentric with the two through holes at the left side of the outer clamping plate II and are connected with each other through screws.
Furthermore, a first flat plate clamping element and a second flat plate clamping element are arranged on the inner sides of the first outer clamping plate and the second outer clamping plate.
Furthermore, grooves are formed in the inner sides of the first outer clamping plate and the second outer clamping plate, grooves are also formed in corresponding positions of the first flat clamping element and the second flat clamping element, and superelastic shape memory alloy C-shaped sheets are arranged in the grooves.
Further, the number of the C-shaped sheets of the super-elastic shape memory alloy is 8.
Furthermore, the first panel clamping element and the second panel clamping element are wrapped by medical silicon rubber films with four support columns.
Compared with the prior art, the invention at least has the following beneficial technical effects:
the invention utilizes the special mechanical characteristics of hyperelasticity of the shape memory alloy and the structural mechanical characteristics of the C-shaped thin plate to ensure that the support reaction force at two ends of the hyperelastic shape memory alloy C-shaped plate is constant force within a certain elastic deformation range, thereby ensuring that the artificial anal sphincter device outputs constant force to the intestinal canal within a controllable deformation range when clamping the intestinal canal and having better force transmission performance. The effect of applying constant force is realized, the problems of device failure caused by insufficient clamping stress of the intestinal canal and ischemic necrosis caused by overlarge clamping stress can be solved, and the probability of intestinal canal tissue necrosis infection is reduced.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the external structure of the apparatus of the present invention;
FIG. 3 is a schematic view of the transmission portion of the present invention;
FIG. 4 is a schematic structural view of the closed state of the apparatus of the present invention;
FIG. 5 is a schematic view of the external structure of the device in the closed state of the device according to the present invention;
FIG. 6 is a schematic view of the device of the present invention in an open state;
FIG. 7 is a schematic view of the external structure of the device of the present invention in an open state;
wherein: 1-knob, 2-screw, 3-link I, 4-link II, 5-link III, 6-link IV, 7-link V, 8-link VI, 9-link VII, 10-device shell, 11-external clamping plate I, 12-external clamping plate II, 13-8 hyperelastic shape memory alloy C-shaped sheets, 14-flat clamping element I and 15-flat clamping element II.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example 1
The novel constant-force clamped artificial anal sphincter device of the embodiment is shown in fig. 1-2, and comprises a knob 1, a screw 2, a first connecting rod 3, a second connecting rod 4, a third connecting rod 5, a fourth connecting rod 6, a fifth connecting rod 7, a sixth connecting rod 8, a seventh connecting rod 9, a device shell 10, a first outer clamping plate 11, a second outer clamping plate 12, 8 superelastic shape memory alloy C-shaped sheets 13, a first flat clamping element 14 and a second flat clamping element 15, wherein the first flat clamping element 14 and the second flat clamping element 15 clamp an intestinal tract. The components are coated by medical silicon rubber films, wherein a first flat clamping element 14 and a second flat clamping element 15 are independently coated by the medical silicon rubber films with four support columns, and the medical silicon rubber film clamping device is characterized in that:
the knob 1 and the screw rod 2 are assembled to form a revolute pair, the screw rod 2 and a through hole in the left side of the device shell 10 are in clearance fit, and when the knob 1 rotates, spiral transmission occurs to drive the screw rod 2 to move transversely.
The shape of the screw 2 is matched with the shape of the through hole of the device shell 10, so that the screw 2 only has a moving pair, and when the screw 2 drives the connecting rod I3 to transversely move, the screw drives the connecting rod II 4, the connecting rod III 5, the connecting rod IV 6, the connecting rod V7, the connecting rod VI 8 and the connecting rod VII 9 to move.
The connecting positions of the first connecting rod 3, the second connecting rod 4, the third connecting rod 5, the fourth connecting rod 6, the fifth connecting rod 7, the sixth connecting rod 8 and the seventh connecting rod 9 are hinged, the second connecting rod 4, the third connecting rod 5, the fourth connecting rod 6, the fifth connecting rod 7, the sixth connecting rod 8 and the seventh connecting rod 9 are symmetrically distributed, a through hole in the middle of the third connecting rod 5 and the sixth connecting rod 8 is concentric with the upper through hole and the lower through hole of the main view surface of the device shell and is connected with a screw, and a through hole in the left end of the fourth connecting rod 6 and the fifth connecting rod 7 is concentric with the two through holes in the middle of the main view surface of the device shell and is connected with the screw.
The center distance of the through holes of the device shell 10 in the front view is the same as the center distance of the circular holes of the first outer clamping plate 11 and the second outer clamping plate 12, and the first outer clamping plate 11, the second outer clamping plate 12, the first connecting rod 3, the second connecting rod 4, the third connecting rod 5 and the fifth connecting rod 7 form a parallelogram, so that the first outer clamping plate 11 and the second outer clamping plate 12 can move longitudinally.
The two through holes at the right ends of the third connecting rod 5 and the fourth connecting rod 6 are respectively concentric with the two through holes at the left side of the first outer clamping plate 11 and are connected with each other by screws, and the two through holes at the right ends of the fifth connecting rod 7 and the sixth connecting rod 8 are respectively concentric with the two through holes at the left side of the second outer clamping plate 12 and are connected with each other by screws. When the knob rotates, a link mechanism formed by a first connecting rod 3, a second connecting rod 4, a third connecting rod 5, a fourth connecting rod 6, a fifth connecting rod 7, a sixth connecting rod 8 and a seventh connecting rod 9 is driven, so that the first outer clamping plate and the second outer clamping plate can move up and down.
The first plate clamping element 14 and the second plate clamping element 15 are kept horizontal in the clamping process, the 8 superelasticity shape memory alloy C-shaped sheets 13 are elastically deformed, and the 8 superelasticity shape memory alloy C-shaped sheets 13 are in a certain elastic deformation range by utilizing the superelasticity of the special mechanical properties of the shape memory alloy and the structural mechanical properties of the C-shaped thin plate, so that the supporting reaction forces at two ends are constant forces.
The arc structures on the two sides of the outer clamping plate I11 and the outer clamping plate II 12 are used for accommodating radial deformation parts when the intestinal canal is extruded.
Example 2
Fig. 1 to 3 show a novel constant force clamped artificial anal sphincter device, which comprises a knob 1, a screw 2, a first connecting rod 3, a second connecting rod 4, a third connecting rod 5, a fourth connecting rod 6, a fifth connecting rod 7, a sixth connecting rod 8, a seventh connecting rod 9, a device shell 10, a first external clamping plate 11, a second external clamping plate 12, 8 superelastic shape memory alloy C-shaped sheets 13, a first flat clamping element 14, and a second flat clamping element 15. Wherein the first plate holding element 14 and the second plate holding element 15 hold the intestine. The first outer clamping plate 11, the second outer clamping plate 12, the first flat clamping element 14, the second flat clamping element 15, the device shell 10 and the knob 1 are all coated by medical silicon rubber films, wherein the first flat clamping element 14 and the second flat clamping element 15 are independently coated by medical silicon rubber films with four support columns. The method is characterized in that: the knob 1 and the device shell 10 form a revolute pair, and the screw rod 2 and the device shell 10 are in clearance fit, so that the screw rod 2 can move along the axial direction to form a moving pair with the shell. The knob 1 and the screw rod 2 form spiral transmission, and when the knob 1 rotates, the screw rod 2 is driven to transversely move. The other end of the screw rod 2 is connected with a central hole of the first connecting rod 3 to drive the second connecting rod 4, the third connecting rod 5, the fourth connecting rod 6, the fifth connecting rod 7, the sixth connecting rod 8 and the seventh connecting rod 9 to move, so that the upper and lower horizontal clamping of the first outer clamping plate 14 and the second outer clamping plate 15 is realized. The inner sides of the first outer clamping plate 11 and the second outer clamping plate 12 are respectively provided with four grooves, the corresponding positions of the first flat clamping element 14 and the second flat clamping element 15 are also respectively provided with four grooves, and 8 hyperelastic shape memory alloy C-shaped sheets are embedded. The first flat clamping element 14 and the second flat clamping element 15 are wrapped by medical silicon rubber films with four supporting columns, the four supporting columns of the silicon rubber are fixed with the first outer clamping plate 11 and the second outer clamping plate 12, and when the intestinal canal is extruded, the silicon rubber supporting columns and the hyperelastic shape memory alloy C-shaped sheet 13 achieve constant force output together. The superelasticity shape memory alloy C-shaped sheets 13 utilize the special mechanical characteristics of the superelasticity shape memory alloy and the structural mechanical characteristics of the C-shaped thin plates, so that the support reaction force of the two ends of 8 superelasticity shape memory alloy C-shaped sheets 13 is constant within a certain elastic deformation range. The arc structures on the two sides of the outer clamping plate I11 and the outer clamping plate II 12 are used for accommodating radial deformation parts when the intestinal canal is extruded. The first plate holding member 14 and the second plate holding member 15 are 55mm long, 40mm apart in the open state of the apparatus, and 6mm apart in the closed state of the apparatus.
Example 3
This embodiment is the state when the intestine is clamped, the device being closed. FIG. 4 shows the internal structure of the device in the closed position, and FIG. 5 shows the external structure of the device in the closed position, in which the first and second outer clamping plates form an oval structure to receive the intestine and the plate clamping elements clamp the intestine.
Example 4
This embodiment is an idle state, and the device is in an open state. Fig. 6 shows the internal structure of the device in the open state, and fig. 7 shows the external structure of the device in the open state.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a novel artifical anal sphincter device of constant force centre gripping which characterized in that, includes revolute pair, link mechanism, device shell and outer grip block, link mechanism sets up in the device shell, the revolute pair drive link mechanism, link mechanism's end-to-end connection outer grip block.
2. The device of claim 1, wherein the turning pair comprises a knob and a screw rod, the screw rod is in clearance fit with the left through hole of the device shell, and the knob turns to drive the screw rod to move transversely.
3. The device as claimed in claim 2, wherein the link mechanism comprises a first link, a second link, a third link, a fourth link, a fifth link, a sixth link and a seventh link which are hinged to each other, the screw is connected with the first link through a central hole, and the second link, the third link, the fourth link, the fifth link, the sixth link and the seventh link are configured to be distributed symmetrically.
4. The device as claimed in claim 3, wherein the middle through holes of the third connecting rod and the sixth connecting rod are concentric with the upper and lower through holes of the main viewing surface of the device shell and are connected by screws; the through holes at the left ends of the fourth connecting rod and the fifth connecting rod are concentric with the two through holes in the middle of the main viewing surface of the device shell and are connected through screws.
5. The device of claim 4, wherein the outer clamping plate comprises a first outer clamping plate and a second outer clamping plate, and the center distance of the through hole in the front view of the device shell is the same as the center distance of the circular holes of the first outer clamping plate and the second outer clamping plate.
6. The device as claimed in claim 5, wherein the three connecting rods and the four connecting rods are concentric with the two through holes on the left side of the first outer clamping plate and are connected with each other by screws, and the five connecting rods and the six connecting rods are concentric with the two through holes on the left side of the second outer clamping plate and are connected with each other by screws.
7. The apparatus of claim 6, wherein the first outer clamping plate and the second outer clamping plate are provided with a first plate clamping element and a second plate clamping element on the inner sides.
8. The apparatus of claim 7 wherein the first and second outer clamping plates have slots formed therein at corresponding locations, the slots having superelastic shape memory alloy C-shaped strips disposed therein.
9. The apparatus of claim 8 wherein the number of C-shaped superelastic shape memory alloy sheets is 8.
10. The apparatus of claim 8, wherein the first plate holding member and the second plate holding member are covered by a medical silicone rubber film having four support columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299202.7A CN113995548A (en) | 2021-11-04 | 2021-11-04 | Novel artificial anal sphincter of constant force centre gripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299202.7A CN113995548A (en) | 2021-11-04 | 2021-11-04 | Novel artificial anal sphincter of constant force centre gripping device |
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| Publication Number | Publication Date |
|---|---|
| CN113995548A true CN113995548A (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111299202.7A Pending CN113995548A (en) | 2021-11-04 | 2021-11-04 | Novel artificial anal sphincter of constant force centre gripping device |
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| CN (1) | CN113995548A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM278681U (en) * | 2005-06-20 | 2005-10-21 | Yi-Yau Shr | Structure for link rod type clamping device |
| CN109875724A (en) * | 2019-03-29 | 2019-06-14 | 上海交通大学 | Double-axis drive closed clamping device |
| CN112318533A (en) * | 2020-09-23 | 2021-02-05 | 南京合信智能装备有限公司 | Adjustable cylinder clamping mechanism based on intelligent welding robot technology |
| CN113060198A (en) * | 2021-05-24 | 2021-07-02 | 王水龙 | Medical oxygen cylinder carrier of static is prevented to pair |
| CN113262076A (en) * | 2021-05-14 | 2021-08-17 | 上海理工大学 | But artifical anal sphincter device of radial contraction formula of constant force centre gripping |
| CN113288503A (en) * | 2021-05-14 | 2021-08-24 | 上海理工大学 | Mechanical artificial anal sphincter device capable of being clamped at constant force |
-
2021
- 2021-11-04 CN CN202111299202.7A patent/CN113995548A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM278681U (en) * | 2005-06-20 | 2005-10-21 | Yi-Yau Shr | Structure for link rod type clamping device |
| CN109875724A (en) * | 2019-03-29 | 2019-06-14 | 上海交通大学 | Double-axis drive closed clamping device |
| CN112318533A (en) * | 2020-09-23 | 2021-02-05 | 南京合信智能装备有限公司 | Adjustable cylinder clamping mechanism based on intelligent welding robot technology |
| CN113262076A (en) * | 2021-05-14 | 2021-08-17 | 上海理工大学 | But artifical anal sphincter device of radial contraction formula of constant force centre gripping |
| CN113288503A (en) * | 2021-05-14 | 2021-08-24 | 上海理工大学 | Mechanical artificial anal sphincter device capable of being clamped at constant force |
| CN113060198A (en) * | 2021-05-24 | 2021-07-02 | 王水龙 | Medical oxygen cylinder carrier of static is prevented to pair |
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