CN202211746U - Multipurpose endoscope - Google Patents
Multipurpose endoscope Download PDFInfo
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- CN202211746U CN202211746U CN2011202903141U CN201120290314U CN202211746U CN 202211746 U CN202211746 U CN 202211746U CN 2011202903141 U CN2011202903141 U CN 2011202903141U CN 201120290314 U CN201120290314 U CN 201120290314U CN 202211746 U CN202211746 U CN 202211746U
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- interior pipe
- outer tube
- endoscope
- pipe
- support arm
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Abstract
The utility model discloses a multipurpose endoscope, which comprises an outer tube and an inner tube. The inner tube is slidably arranged in the outer tube, a lens is disposed at the front end of the inner tube, the rear end of the inner tube is connected with a light source and a camera, a framework is disposed at the front end of the outer tube, an openable flexible umbrella sac is disposed on the framework, and a supporting rod is disposed between the framework and the inner tube. The endoscope is simple in structure, and is not easy to cause pains of human bodies.
Description
Technical field
This utility model relates to medical endoscope.
Background technology
Endoscope is a pipe that is equipped with light, and it can trans-oral gets into gastric or gets in bodies through other natural ducts.Utilize endoscope can see the pathological changes that X ray can not show, so it is very useful to the doctor.For example, by ulcer or swollen the staying that the doctor of endoscope can observe gastric, make best therapeutic scheme in view of the above.The kind of present endoscope is a lot; As being to be to disclose a kind of endoscope foreign body protector in the patent documentation of 2004.10.20 2003.8.22 Granted publication day in the patent No. for the ZL03258315.X applying date; Mainly contain protection capsule bag, overcoat conduit, propulsion bulb, diastole seal wire, said diastole seal wire one end passes propulsion bulb and encircles to be through and protect the capsule bag to go to the bottom
In the bound edge of mouth, the other end is connected with diastole seal wire handle, and propulsion bulb one end and protection capsule are adorned affixed, and its other end is connected in the overcoat conduit and with the propulsion bulb handle.This structure adopts expandable protector, shrinks earlier to get into upper digestive tract, and endoscopically safety is taken out foreign body; Particularly taking out has the foreign body of sharp edges more effective.But this endoscope not only needs insertion tube, the system structure that also needs a cover to supply the capsule bag to open and shrink; Therefore, its complex structure, and; The system structure that supplies the capsule bag to open and shrink is arranged on the outer wall of insertion tube, has caused whole diameter to become big, and; In the time of in being inserted into human body, cause the pain of human body easily.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, is not easy to cause the endoscope of human body pain.
For achieving the above object, multipurpose endoscope comprises outer tube and interior pipe, and what described interior pipe slided is located in the outer tube; The front end of interior pipe is provided with camera lens, and the rear end of interior pipe is connected to light source and photographic head; The front end of outer tube is provided with skeleton, and skeleton is provided with the flexible umbrella capsule with a folding, is provided with support bar between skeleton and the interior pipe.
The endoscope of said structure is through interior pipe, camera lens, photographic head, the intravital disease of light source observer; Because be provided with support bar between interior pipe and the skeleton, the umbrella capsule is arranged on the skeleton, when managing when pulling or in promoting; Then can make the opening and closing of umbrella capsule; Thereby make things convenient for, take out the intravital foreign body of people reliably, particularly more effective for the foreign body that corner angle are arranged, and compared with prior art; Interior pipe is provided in a side of in the outer tube, is not easy to cause pain when being inserted in the human body.
As improvement, between outer tube and interior pipe, be provided with input pipe and outlet tube in the umbrella capsule.Described input pipe is used for a part input medicine, cleanout fluid and other operating theater instruments in human body, so that carry out non-operative treatment, operative treatment or cleaning; Described outlet tube is used to discharge foreign body in vivo and pathological tissues, like this, can simplify operation process, can discharge foreign body in vivo and the interior pathological changes of treatment body timely, reaches therapeutic purposes.
As improvement, between outer tube and interior pipe, be provided with the treatment pipe in the umbrella capsule.Described treatment pipe is convenient to the doctor and is carried out non-operative treatment, like laser lithotripsy etc., to reduce patient's misery.
As improvement, outward radial is extended with first boss on the rear end outer wall of interior pipe, and first boss is positioned at the rear of outer tube back-end face; Outward radial is extended with second boss on the rear end outer wall of outer tube.The proal distance of pipe prevented because of the excessive umbrella capsule that damages of interior pipe displacement in first boss was used to limit.
As improvement, the leading section that between outer tube and interior pipe, is positioned at outer tube is provided with first sealing ring.After first sealing ring is set, the good seal performance between outer tube and the interior pipe, the liquid in the umbrella capsule is not easy to penetrate between outer tube and the interior pipe.
As improvement, outward radial is extended with the 3rd boss on the leading section outer wall of interior pipe.The distance that pipe moved backward in the 3rd boss was used to limit, pipe is extracted out from outer tube in preventing.
As improvement, the 3rd boss is provided with second sealing ring.Second sealing ring is set, when the 3rd boss is kept out the end of outer tube, can improves sealing, prevent that the liquid in the umbrella capsule from flowing between outer tube and the interior pipe.
As improvement, outer tube is provided with has graduated locating piece, is provided with chute in the locating piece; Be provided with slide block in the chute, be provided with detent with the corresponding position of scale on the inwall of chute, slide block is provided with positioning convex; Be provided with connecting rod between slide block and the interior pipe, connect hand-held push-pull bar on the slide block.Said structure is convenient to promote and the interior pipe motion of pulling, thus the opening and closing of control umbrella capsule; Owing to be provided with scale, and be provided with detent at the scale place, on slide block, be provided with positioning convex, therefore, the displacement of pipe in controlling accurately.
As improvement; The pipe and interior pipe between be provided with let in tubular axis to the motion the tooth clamp device, described tooth clamp device comprises first support arm, second support arm and has the limited block of latch that described limited block is provided with scale; Described first support arm and second support arm are hinged at the middle part; The front end of first support arm is connected with interior pipe, and the front end of second support arm is connected with outer tube, and the rear end of first support arm is fixed on the limited block.Above-mentioned tooth clamp device is convenient to promote and the interior pipe motion of pulling, thus the opening and closing of control umbrella capsule; Since be provided with limited block with latch,, therefore, the displacement of pipe in controlling accurately.
Description of drawings
Fig. 1 is the structure chart of the first embodiment multipurpose endoscope.
Fig. 2 is the state diagram of the first embodiment multipurpose endoscope umbrella capsule when opening.
State diagram when Fig. 3 is the contraction of the first embodiment multipurpose endoscope.
Fig. 4 is the enlarged drawing of A among Fig. 1.
Fig. 5 is the structure chart of the second embodiment multipurpose endoscope.
Fig. 6 is the state diagram of the second embodiment multipurpose endoscope umbrella capsule when opening.
State diagram when Fig. 7 is the contraction of the second embodiment multipurpose endoscope.
Fig. 8 is the enlarged drawing of B among Fig. 5.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is further elaborated.
First embodiment.
To shown in Figure 4, multipurpose endoscope comprises outer tube 1 and interior pipe 2 like Fig. 1, and what described interior pipe 2 slided is located in the outer tube 1; The front end of interior pipe 1 is provided with camera lens 3, and the rear end of interior pipe 1 is provided with light source 4 and photographic head 5; The front end of outer tube 1 is provided with the skeleton (not shown), and skeleton is provided with the flexible umbrella capsule 6 with an opening, is provided with support bar 7 between skeleton and the interior pipe.Outward radial is extended with first boss 21 on the rear end outer wall of interior pipe 2, and first boss 21 is positioned at the rear of outer tube back-end face 11; Outward radial is extended with second boss 12 on the rear end outer wall of outer tube.The leading section that between outer tube 1 and interior pipe 2, is positioned at outer tube is provided with the first sealing ring (not shown), to improve the sealing of outer tube and interior pipe.Outward radial is extended with the 3rd boss 22 on the leading section outer wall of interior pipe; On the 3rd boss 22, be provided with the second sealing ring (not shown); The distance that pipe moved backward in the 3rd boss 22 was used to limit, pipe is extracted out from outer tube in preventing, and second sealing ring can improve sealing property.
Between outer tube 1 and interior pipe 2, be provided with input pipe 8, outlet tube 9 and treatment pipe 10 in the umbrella capsule.
Be provided with between outer tube 1 and the interior pipe 2 and let interior tubular axis to the tooth clamp device that moves; Described tooth clamp device comprises first support arm 111, second support arm 112 and has the limited block 113 of latch; Described limited block 113 is provided with scale, and described first support arm 111 and second support arm 112 are hinged at the middle part, in the front end of first support arm 111 is clamped on pipe 2 first boss 21; The front end of second support arm 112 is clamped on second boss 12, and the rear end of first support arm 111 is fixed on the limited block.
When using the multipurpose endoscope of this embodiment, as shown in Figure 1, the front end of interior pipe 2 is positioned at forefront; The umbrella capsule is in contraction state, and under this state, endoscope enters in the human body through the human body natural duct; Under the effect of light source; Through the patient's condition that camera lens 3 and photographic head 5 are observed a part in the human body, when finding the patient's condition, utilize the endoscope of this embodiment can accomplish following processing.
(1) takes out foreign body, as shown in Figures 2 and 3, strut first support arm 111 and second support arm 112; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch; Wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs, and is accurately controlled moving of interior pipe by the scale on the limited block 113; After the umbrella capsule opened, foreign body entered in the umbrella capsule 6, then, continued to strut first support arm 111 and second support arm 112; Interior pipe 2 continues motion to the back-end, and simultaneously, skeleton slowly closes up under the effect of support bar 7, and closing up of skeleton impels umbrella capsule 6 to close up; At this moment, the 3rd boss 22 is kept out on the front end face of outer tube 1, and is as shown in Figure 3, and foreign body is wrapped in the umbrella capsule; At last, extract endoscope out, foreign body is followed the umbrella capsule and is removed.
(2) rubble takes out, and as shown in Figures 2 and 3, struts first support arm 111 and second support arm 112; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch; Wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs, and is accurately controlled moving of interior pipe by the scale on the limited block 113; After the umbrella capsule opened, foreign body entered in the umbrella capsule 6, then, continued to strut first support arm 111 and second support arm 112; Interior pipe 2 continues motion to the back-end, and simultaneously, skeleton slowly closes up under the effect of support bar 7, and closing up of skeleton impels umbrella capsule 6 to close up; As shown in Figure 3, foreign body is wrapped in the umbrella capsule, then; Pipe 10 carries out the laser fracturing sucking-off in the umbrella capsule that is not drawn out of or injection solution is discharged solid dissolving through treating, and is last, accomplishes and gets stone or lithodialysis.Like this, can reduce on the one hand patient's misery, on the other hand, the material that is broken can not move, and follows in the umbrella capsule that the umbrella capsule takes out together or discharges through treatment pipe 10 but stayed.Certainly, the above-mentioned material that is broken can directly be discharged through the mode of flushing, in umbrella capsule 6, feeds cleanout fluid through input pipe 8 that is:, and the cleanout fluid that enters in the umbrella capsule 6 is discharged through outlet tube 9 together with broken material.
(3) treatment as shown in Figures 2 and 3, struts first support arm 111 and second support arm 112; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch; Wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs, and is accurately controlled moving of interior pipe by the scale on the limited block 113; After the umbrella capsule opens, in human body, inject medicine through input pipe 8, reach the purpose of treatment; Perhaps treat through treatment pipe 10; Or utilize laser ablation food meat and tumor through treatment pipe 10, to cautery of tumor, freezing or gasification etc.
(4) clean, as shown in Figures 2 and 3, strut first support arm 111 and second support arm 112; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch; Wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs, and is accurately controlled moving of interior pipe by the scale on the limited block 113; After the umbrella capsule opens, in human body, feed cleanout fluid through input pipe 8, cleanout fluid is discharged through outlet tube 9.
The multipurpose endoscope of this embodiment is applicable to.
(1) stone, lithodialysis etc. are got in the inspection of kidney, ureter, bladder.
(2) inspection of nasal cavity, auditory meatus and treatment.
(3) inspection of trachea, esophagus, gallbladder, stomach, intestinal, foreign body takes out, biopsy, food meat excision etc.
(4) inspection of vagina, uterus, ovary, multiple logical, induced labor, hemostasis etc.
(5) breast, abdominal operation, inspection and treatment.
(6) cardiovascular inspection, operative treatment send support, gets thrombosis etc.
(7) to cautery of tumor, freezing or gasification etc.
Second embodiment.
To shown in Figure 8, multipurpose endoscope comprises outer tube 1 and interior pipe 2 like Fig. 5, and what described interior pipe 2 slided is located in the outer tube 1; The front end of interior pipe 1 is provided with camera lens 3, and the rear end of interior pipe 1 is provided with light source 4 and photographic head 5; The front end of outer tube 1 is provided with the skeleton (not shown), and skeleton is provided with the flexible umbrella capsule 6 with an opening, is provided with support bar 7 between skeleton and the interior pipe.Outward radial is extended with first boss 21 on the rear end outer wall of interior pipe 2, and first boss 21 is positioned at the rear of outer tube back-end face 11; Outward radial is extended with second boss 12 on the rear end outer wall of outer tube.The leading section that between outer tube 1 and interior pipe 2, is positioned at outer tube is provided with the first sealing ring (not shown), to improve the sealing of outer tube and interior pipe.Outward radial is extended with the 3rd boss 22 on the leading section outer wall of interior pipe; On the 3rd boss 22, be provided with the second sealing ring (not shown); The distance that pipe moved backward in the 3rd boss 22 was used to limit, pipe is extracted out from outer tube in preventing, and second sealing ring can improve sealing property.
Between outer tube 1 and interior pipe 2, be provided with input pipe 8, outlet tube 9 and treatment pipe 10 in the umbrella capsule.
Outer tube 1 is provided with has graduated locating piece 121; Be provided with chute 122 in the locating piece 121; Be provided with slide block 123 in the chute, be provided with the detent (not shown) with the corresponding position of scale on the inwall of chute 122, slide block is provided with the positioning convex (not shown); Be provided with connecting rod 124 between slide block and the interior pipe, connect hand-held push-pull bar 125 on the slide block.
When using the multipurpose endoscope of this embodiment, as shown in Figure 5, first boss 21 is kept out on the rear end face of outer tube; The front end of interior pipe 2 is positioned at forefront, and the umbrella capsule is in contraction state, under this state; Endoscope enters in the human body through the human body natural duct, under the effect of light source, through the patient's condition of a part in camera lens 3 and the photographic head 5 observation human bodies; When finding the patient's condition, utilize the endoscope of this embodiment can accomplish following processing.
(1) take out foreign body, like Fig. 6 and shown in Figure 7, pulled backwards is handed push-pull bar 125, and slide block 123 slides in chute 122 backward; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch, and wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs; And by accurate the moving of pipe in the control of scale, slide block whenever moves a scale, positioning convex then holding in detent; After the umbrella capsule opened, foreign body entered in the umbrella capsule 6, then, continued the hand-held push-pull bar 125 of pulled backwards; Interior pipe 2 continues motion to the back-end, and simultaneously, skeleton slowly closes up under the effect of support bar 7, and closing up of skeleton impels umbrella capsule 6 to close up; At this moment, the 3rd boss 22 is kept out on the front end face of outer tube 1, and is as shown in Figure 7, and foreign body is wrapped in the umbrella capsule; At last, extract endoscope out, foreign body is followed the umbrella capsule and is removed.
(2) rubble takes out, and like Fig. 6 and shown in Figure 7, pulled backwards is handed push-pull bar 125, and slide block 123 slides in chute 122 backward; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch, and wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs; And by accurate the moving of pipe in the control of scale, slide block whenever moves a scale, positioning convex then holding in detent; After the umbrella capsule opened, foreign body entered in the umbrella capsule 6, then, continued the hand-held push-pull bar 125 of pulled backwards; Interior pipe 2 continues motion to the back-end, and simultaneously, skeleton slowly closes up under the effect of support bar 7, and closing up of skeleton impels umbrella capsule 6 to close up; As shown in Figure 7, foreign body is wrapped in the umbrella capsule, then; Pipe 10 carries out the laser fracturing sucking-off in the umbrella capsule that is not drawn out of or injection solution is discharged solid dissolving through treating, and is last, accomplishes and gets stone or lithodialysis.Like this, can reduce on the one hand patient's misery, on the other hand, the material that is broken can not move, and follows in the umbrella capsule that the umbrella capsule takes out together or discharges through treatment pipe 10 but stayed.Certainly, the above-mentioned material that is broken can directly be discharged through the mode of flushing, in umbrella capsule 6, feeds cleanout fluid through input pipe 8 that is:, and the cleanout fluid that enters in the umbrella capsule 6 is discharged through outlet tube 9 together with broken material.
(3) treatment, like Fig. 6 and shown in Figure 7, pulled backwards is handed push-pull bar 125, and slide block 123 slides in chute 122 backward; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch, and wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs; And by accurate the moving of pipe in the control of scale, slide block whenever moves a scale, positioning convex then holding in detent; After the umbrella capsule opens, in human body, inject medicine through input pipe 8, reach the purpose of treatment; Perhaps treat through treatment pipe 10; Or utilize laser ablation food meat and tumor through treatment pipe 10, to cautery of tumor, freezing or gasification etc.
(4) clean, like Fig. 6 and shown in Figure 7, pulled backwards is handed push-pull bar 125, and slide block 123 slides in chute 122 backward; The motion to the back-end of interior pipe 2, simultaneously, skeleton launches under the effect of support bar 7; The expansion of skeleton impels umbrella capsule 6 to launch, and wherein, the displacement of interior pipe is confirmed according to the unfolded degree of umbrella capsule needs; And by accurate the moving of pipe in the control of scale, slide block whenever moves a scale, positioning convex then holding in detent; After the umbrella capsule opens, in human body, feed cleanout fluid through input pipe 8, cleanout fluid is discharged through outlet tube 9.
The multipurpose endoscope of this embodiment is applicable to.
(1) stone, lithodialysis etc. are got in the inspection of kidney, ureter, bladder.
(2) inspection of nasal cavity, auditory meatus and treatment.
(3) inspection of trachea, esophagus, gallbladder, stomach, intestinal, foreign body takes out, biopsy, food meat excision etc.
(4) inspection of vagina, uterus, ovary, multiple logical, induced labor, hemostasis etc.
(5) breast, abdominal operation, inspection and treatment.
(6) cardiovascular inspection, operative treatment send support, gets thrombosis etc.
(7) to cautery of tumor, freezing or gasification etc.
Claims (9)
1. multipurpose endoscope is characterized in that: comprise outer tube and interior pipe, described interior being located in the outer tube of sliding of managing; The front end of interior pipe is provided with camera lens, and the rear end of interior pipe is connected to light source and photographic head; The front end of outer tube is provided with skeleton, and skeleton is provided with the flexible umbrella capsule with a folding, is provided with support bar between skeleton and the interior pipe.
2. multipurpose according to claim 1 endoscope is characterized in that: between outer tube and interior pipe, be provided with input pipe and outlet tube in the umbrella capsule.
3. multipurpose according to claim 1 and 2 endoscope is characterized in that: between outer tube and interior pipe, be provided with the treatment pipe in the umbrella capsule.
4. multipurpose according to claim 1 endoscope, it is characterized in that: outward radial is extended with first boss on the rear end outer wall of interior pipe, and first boss is positioned at the rear of outer tube back-end face; Outward radial is extended with second boss on the rear end outer wall of outer tube.
5. multipurpose according to claim 1 endoscope, it is characterized in that: the leading section that between outer tube and interior pipe, is positioned at outer tube is provided with first sealing ring.
6. according to claim 1 or 5 described multipurpose endoscopies, it is characterized in that: outward radial is extended with the 3rd boss on the leading section outer wall of interior pipe.
7. multipurpose according to claim 6 endoscope, it is characterized in that: the 3rd boss is provided with second sealing ring.
8. multipurpose according to claim 1 endoscope; It is characterized in that: outer tube is provided with has graduated locating piece, is provided with chute in the locating piece, is provided with slide block in the chute; Be provided with detent with the corresponding position of scale on the inwall of chute; Slide block is provided with positioning convex, is provided with connecting rod between slide block and the interior pipe, connects hand-held push-pull bar on the slide block.
9. multipurpose according to claim 1 endoscope; It is characterized in that: be provided with between outer tube and the interior pipe let in tubular axis to the motion the tooth clamp device, described tooth clamp device comprises first support arm, second support arm and has the limited block of latch that described limited block is provided with scale; Described first support arm and second support arm are hinged at the middle part; The front end of first support arm is connected with interior pipe, and the front end of second support arm is connected with outer tube, and the rear end of first support arm is fixed on the limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202903141U CN202211746U (en) | 2011-08-11 | 2011-08-11 | Multipurpose endoscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202903141U CN202211746U (en) | 2011-08-11 | 2011-08-11 | Multipurpose endoscope |
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| CN202211746U true CN202211746U (en) | 2012-05-09 |
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| CN2011202903141U Expired - Fee Related CN202211746U (en) | 2011-08-11 | 2011-08-11 | Multipurpose endoscope |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755675A (en) * | 2012-07-31 | 2012-10-31 | 樊光辉 | Visual anal tube for cleaning intestinal tracts and insertion method thereof |
| CN103271786A (en) * | 2013-04-01 | 2013-09-04 | 珠海成富医疗器材有限公司 | Visual support releaser |
| CN109925033A (en) * | 2017-12-15 | 2019-06-25 | 财团法人工业技术研究院 | For constraining the device, its instrument and its band of cervix |
| CN110652617A (en) * | 2019-10-10 | 2020-01-07 | 杨廷然 | Improved gastric lavage device |
-
2011
- 2011-08-11 CN CN2011202903141U patent/CN202211746U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755675A (en) * | 2012-07-31 | 2012-10-31 | 樊光辉 | Visual anal tube for cleaning intestinal tracts and insertion method thereof |
| CN103271786A (en) * | 2013-04-01 | 2013-09-04 | 珠海成富医疗器材有限公司 | Visual support releaser |
| CN103271786B (en) * | 2013-04-01 | 2015-11-18 | 珠海成富医疗器材有限公司 | Visual support releaser |
| CN109925033A (en) * | 2017-12-15 | 2019-06-25 | 财团法人工业技术研究院 | For constraining the device, its instrument and its band of cervix |
| CN109925033B (en) * | 2017-12-15 | 2020-10-09 | 财团法人工业技术研究院 | Device for restraining cervix, instrument thereof and band thereof |
| US10918414B2 (en) | 2017-12-15 | 2021-02-16 | Industrial Technology Research Institute | Device, instrument and belt for tying cervix |
| CN110652617A (en) * | 2019-10-10 | 2020-01-07 | 杨廷然 | Improved gastric lavage device |
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Granted publication date: 20120509 Termination date: 20150811 |
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