CN104353176A - Medical operation sheath - Google Patents
Medical operation sheath Download PDFInfo
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- CN104353176A CN104353176A CN201410637644.1A CN201410637644A CN104353176A CN 104353176 A CN104353176 A CN 104353176A CN 201410637644 A CN201410637644 A CN 201410637644A CN 104353176 A CN104353176 A CN 104353176A
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- sheath
- wall
- medical
- catheter
- pipe
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Abstract
The invention discloses a medical operation sheath, and relates to the field of medical apparatuses, which aims at solving the problems of the existing medical sheath catheter that the diameter cannot be controlled and the pain is caused by the easy tissue injury when the sheath catheter is directly inserted into a body cavity. The medical operation catheter is provided with a circular arc-shaped sheath wall, the circular arc-shaped sheath wall is made of medical hard elastic material, a defect part is formed between generatrices of the side edges of the shear wall, and is provided with an expansion and retraction catheter which is made of medical elastic material, the front end of the expansion and retraction catheter is sealed, the tail end of the expansion and retraction catheter is provided with an air ventilation valve or a liquid filling valve, the catheter wall of the expansion and retraction catheter and the sheath walls at the left end and the right end of the defect part are closed to form a front-back through sheath catheter, and the two ends of the generatrices at the two sides of the sheath wall are inwards bent to form a bending part. The medical operation sheath has the advantages that by arranging the expansion and retraction catheter, the sheath catheter enters the body cavity by smaller cavity diameter; after being inserted, the sheath catheter slowly expands the cavity of the human body, the risk of injury to surrounding tissues in the insertion process is decreased, the pain of a patient is reduced, and the pain caused by the catheter plugging is reduced by the retractable structure of the sheath catheter.
Description
Technical field
The invention belongs to medical instruments field, specifically, relate to the retractable medical operation sheath of a kind of intramedullary expansion.
Background technology
Endoscopic technic is widely used clinically, has damaging little, the advantage such as post-operative recovery is fast.Before operation, often need set up enough large passage in advance by a kind of sheath that operates, then enter in body operate by operating the tract of sheath inside.
At present, the method for conventional Path Setup is outer expanding, and namely first insert a thin seal wire as guidance, then insert the fixed-size sheath pipe of tube chamber along this root seal wire, then exit seal wire, passage has built.There is many deficiencies in the operation sheath of this structure and method of work thereof: 1, because sheath pipe surrounds outside seal wire, and when placing sheath pipe along seal wire, sheath tube wall and tissue direct friction, easily cause tissue injury; 2, sheath pipe diameter is comparatively large, and significantly expand body cavities and tissue by force, the misery caused to patient is very large; 3, pipe sheath diameter is fixed, and operating walk way size is uncontrollable, cannot meet the demand building various diameter operating walk way.
Summary of the invention
In view of this, the invention provides the retractable medical operation sheath of a kind of intramedullary expansion, by intramedullary expansion and retractable form, reduce the risk of putting misery that pipe and tube drawing cause tissue and damage, add the safety of sheath pipe and simplicity.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
A kind of medical operation sheath, comprise at least one piece of circular arc sheath wall be made up of medical rigid elastomeric material, defect portion is formed between the side bus of described sheath wall, described defect portion is provided with the expansion retraction pipe that medical elastic material is formed, this expansion retraction pipe forward end seal, end arranges breather valve or liquid-filling valve, the sheath pipe that the described expansion retraction tube wall of pipe and the sheath wall at two ends, left and right, defect portion are through before and after closing and being formed; During tranquillization, described sheath wall and expansion retraction pipe are in retracted state.
Adopt the medical operation sheath of technique scheme, during use, first sheath pipe is inserted body cavity, from the breather valve of each expansion retraction pipe end or liquid-filling valve after inserting, injecting gas or liquid simultaneously, by the expansion of expansion retraction pipe, the sheath wall at the two ends, respective left and right that stretch, thus the diameter expanding sheath pipe tube chamber; When extracting sheath pipe, breather valve or liquid-filling valve are opened, gas or liquid in discharge pipe, the pressure of expansion retraction pipe reduces, and sheath wall automatic retracted, sheath pipe reduced, alleviates tube drawing resistance, be beneficial to tube drawing.
Preferably, described sheath pipe only comprises one piece of C type sheath wall, and the tube wall that this sheath wall and ellipticity expand the pipe that bounces back holds and forms sheath pipe.Above-mentioned restriction ensure that sheath pipe only has one piece of C type sheath wall and expansion retraction pipe to be formed, the mitigation and amplification of sheath pipe diameter so only just can be controlled by an expansion retraction pipe, whole result is simpler, and elliptoid expansion retraction pipe is more conducive to extending to both sides when expanding, thus stretching C type sheath wall, expand sheath tube chamber diameter.
Preferably, the side bus two ends of described sheath wall at least to curve inwardly formation bending section one end.The restriction of bending section makes sheath pipe sheath tube chamber diameter when inserting body cavity less, but can obtain larger sheath tube chamber diameter during expansion.
Preferably, described expansion retraction pipe is the flat structure extended along two ends, left and right, defect portion formed by medial wall and lateral wall.Expansion retraction pipe is designed to more be conducive to when flat structure can make it expand under retracted state extending to both sides, thus struts sheath wall dual-side, expand sheath tube chamber diameter, and inside and outside sidewall is inwardly not easy when expanding or expands outwardly.
Preferably, described medial wall thickness is greater than lateral wall thickness.Because pipe thickness is larger, it is more not easy dilatating and deformable, therefore after the enlargement of pipe of expansion retraction, the medial wall that thickness is thicker is very little to sheath tube chamber intramedullary expansion scope, and the less lateral wall of thickness expands outwardly scope and wants large, due to medial wall also can be driven when lateral wall is expanded to move laterally, therefore above-mentioned restriction makes expansion retraction pipe when expanding, and sheath tube chamber diameter can't reduce.
Preferably, described medial wall is made up of hard elastic material, and lateral wall is made up of soft elastic material.Above-mentioned restriction is that the amplitude that lateral wall expands outwardly is greater than the amplitude of medial wall to intramedullary expansion, and therefore sheath tube chamber diameter also can not reduce in order to ensure that expansion retraction pipe is when expanding equally.
Preferably, described sheath wall and medial wall all select shore hardness to be the medical polyurethane material of 60 ~ 70D, and described lateral wall selects shore hardness to be the medical grade rubber material of 70 ~ 80A.
Preferably, medical polyurethane material selected by described sheath wall.
The present invention compared to existing technology, by arranging expansion retraction pipe, making sheath pipe enter body cavity when inserting with comparatively loculus footpath, reducing the risk of damaging surrounding tissue in the process of inserting, body cavities and tissue is being expanded slowly continuously after inserting, significantly reduce sufferer misery, utilize the retractable structure of sheath pipe, the resistance alleviating tube drawing and the misery caused, in addition, by this controlled expanded form, the needs of various tract size can be met, add the clinical application range of this sheath pipe.
Accompanying drawing explanation
Fig. 1 is the structural representation of medical operation sheath embodiment 1;
Fig. 2 is the generalized section of sheath pipe embodiment 1;
The structural representation of medical operation sheath embodiment 2 in Fig. 3;
Fig. 4 is the generalized section of sheath pipe embodiment 2;
Fig. 5 is the generalized section that sheath pipe is provided with the embodiment 3 of bending section;
Fig. 6 is the structural representation of embodiment 4;
Fig. 7 is the structural representation (embodiment 5 and embodiment 6) of expansion retraction pipe.
Detailed description of the invention
In order to make those skilled in the art, the present invention may be better understood, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the explanation of specific embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Embodiment one:
As shown in Figure 1 and Figure 2, a kind of medical operation sheath, comprise the two pieces of circular arc sheath walls 2 in left and right, defect portion 22 is formed between the side bus 21 of two sheath wall 2 correspondences, place of defect portion 22 arranges expansion retraction pipe 3, this expansion retraction pipe 3 forward end seal, end arranges the breather valve or the liquid-filling valve 4 that make its expanse, sheath pipe 1 through before and after the described tube wall 31 expanding retraction pipe 3 is formed with the sheath wall 2 at two ends, defect portion about 22 is closed.Here sheath wall 2 adopts the hard elastic materials such as medical polyurethane to make, and expansion retraction pipe 3 can adopt medical grade rubber elastomeric material to make.
Before using, sheath wall 2 and expansion retraction pipe 3 are all in retracted state.During use, first sheath pipe 2 is inserted body cavity, by the breather valve of expansion retraction pipe 3 end or liquid-filling valve 4 after inserting, injecting gas or liquid, the sheath wall 2 of after-drawing sheath pipe 1 expanded by expansion retraction pipe 3, thus expands sheath pipe 1 lumen diameter; When sheath pipe 1 extracted by needs, breather valve or liquid-filling valve 4 are opened, discharge air or the liquid of expansion retraction pipe 3, overpressure reduces rear sheath pipe 1 automatic retracted, and diameter reduces, and alleviates resistance, be beneficial to tube drawing during tube drawing.
Embodiment two:
As Fig. 3, shown in Fig. 4, the difference of this embodiment and embodiment one is: sheath pipe 1 only has one piece of semicircle C type sheath wall 2 and one to expand the pipe 3 that bounces back to form, expansion retraction pipe 3 is still positioned at the defect portion of sheath wall 2, sheath pipe 1 through before and after its tube wall 31 and the sheath wall 2 at two ends, left and right, defect portion are closely connected to form, such sheath pipe 1 only just can be controlled the mitigation and amplification of sheath pipe 1 diameter by an expansion retraction pipe 3, expansion retraction pipe 3 is set to the ellipticity coordinating C type sheath wall 2, and long axis direction two ends connect two ends, left and right, defect portion, such expansion retraction pipe 3 is more conducive to extending to both sides when expanding, thus stretching C type sheath wall 2, expand sheath pipe 1 cavity diameter.
Embodiment three:
As shown in Figure 5, this embodiment has done following improvement on the basis of enforcement two: the both end sides edges generating line 21 of sheath wall 2 all curves inwardly and forms bending section 23, the restriction of bending section 23 makes expansion retraction pipe 3 more by sheath pipe 1 inside cavity, sheath pipe 1 sheath pipe 1 cavity diameter when inserting body cavity is less, during expansion, bending section 23 outwards deformation under expansion retraction pipe 3 stretches, can obtain larger sheath pipe 1 cavity diameter.Certainly it is also no problem for according to circumstances only at one end arranging bending section 23 for realizing above-mentioned technical purpose.
Embodiment four:
As shown in Figure 6, this embodiment does following improvement to embodiment two: expansion retraction pipe 3 is the flat structures extended along two ends, defect portion about 22 formed by medial wall 31a and lateral wall 31b, and this improvement also can be applied in embodiment three.Expansion retraction pipe 3 is designed to more be conducive to extending to both sides when flat structure can make it expand under retracted state, thus strut sheath wall 2 dual-side, expand sheath pipe 1 cavity diameter, and medial wall 31a is not easy to intramedullary expansion when expanding, lateral wall 31b is not easy to expand outwardly.
Embodiment five:
As shown in Figure 7, this embodiment can make further improvements for the expansion retraction tubular construction in embodiment four: be specially medial wall 31a thickness and be greater than lateral wall 31b thickness.Because tube wall 31 thickness is larger, it is more not easy dilatating and deformable, therefore after expansion retraction pipe 3 is expanded, the medial wall 31a that thickness is thicker is very little to sheath pipe 1 cavity intramedullary expansion scope, and the less lateral wall 31b of thickness expands outwardly scope and wants large, due to medial wall 31b also can be driven when lateral wall 31a expands to move laterally, therefore above-mentioned restriction makes expansion retraction pipe 3 when expanding, and sheath pipe 1 cavity diameter can not exist the situation of reduction.
Embodiment six:
As shown in Figure 7, this embodiment can also do different improvement for the expansion retraction tubular construction in embodiment four: be specially medial wall 31a and select the hard elastic materials such as medical polyurethane, lateral wall 31b selects the soft elastic materials such as medical grade rubber, here the material of medial wall 31a and the material of sheath wall 2 all select shore hardness to be the medical polyurethane material of 60 ~ 70D, and lateral wall 31b selects shore hardness to be the material of 70 ~ 80A.Above-mentioned restriction can ensure that expansion retraction pipe 3 is when expanding equally, and the amplitude that lateral wall 31b expands outwardly is greater than the amplitude of medial wall 31a to intramedullary expansion, and therefore sheath pipe 1 cavity diameter also can not reduce.
It should be noted that, the expansion that retraction pipe 3 is mainly expanded in the expansion of sheath pipe 1 cavity diameter causes caused by sheath wall 2 dual-side bus end launches, and therefore on the Material selec-tion of sheath wall 2, can select some inductilities or the less material of retractility.
Visible, sheath pipe described in the application is that the form again by intramedullary expansion after inserting body cavity expands sheath pipe interior lumen, avoid larger-diameter sheath pipe when inserting body cavity by force, significantly expand the situation of body cavities and tissue, correspondingly reduce the risk of directly outside expansion damaging surrounding tissue, alleviate sufferer misery by continuous expansion body cavities and tissue slowly simultaneously, achieve sheath pipe diameter controlled, add the clinical application range of sheath pipe.
Claims (8)
1. a medical operation sheath, it is characterized in that, comprise at least one piece of circular arc sheath wall (2) be made up of medical rigid elastomeric material, defect portion (22) is formed between the adjacent side bus (21) of described sheath wall (2), described defect portion (22) is provided with expansion retraction pipe (3) that medical elastic material is formed, this expansion retraction pipe (3) forward end seal, end arranges breather valve or liquid-filling valve (4), the sheath pipe (1) that the tube wall (31) of described expansion retraction pipe (3) is through before and after being formed with the sheath wall (2) at defect portion (22) two ends, left and right is closed, during tranquillization, described sheath wall (2) and expansion retraction pipe (3) are in retracted state.
2. medical operation sheath according to claim 1, is characterized in that, described sheath pipe (2) comprises one piece of C type sheath wall (2), and this sheath wall (2) and expansion bounce back and manage (3) and hold and form sheath pipe (1).
3. medical operation sheath according to claim 1 and 2, is characterized in that, side bus (21) two ends of described sheath wall (2) at least one end curve inwardly and form bending section (23).
4. medical operation sheath according to claim 1 and 2, it is characterized in that, described expansion retraction pipe (3) is the flat structure extended along defect portion (22) two ends, left and right formed by medial wall (31a) and lateral wall (31b).
5. medical operation sheath according to claim 4, is characterized in that, described medial wall (31a) thickness is greater than lateral wall (31b) thickness.
6. medical operation sheath according to claim 4, is characterized in that, described medial wall (31a) is made up of hard elastic material, and described lateral wall (31b) is made up of soft elastic material.
7. medical operation sheath according to claim 6, it is characterized in that, described medial wall (31a) selects shore hardness to be the medical polyurethane material of 60 ~ 70D, and described lateral wall (31b) selects shore hardness to be the medical grade rubber material of 70 ~ 80A.
8. medical operation sheath according to claim 1, is characterized in that, described sheath wall (2) selects medical polyurethane material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410637644.1A CN104353176B (en) | 2014-11-10 | 2014-11-10 | Medical operation sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410637644.1A CN104353176B (en) | 2014-11-10 | 2014-11-10 | Medical operation sheath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104353176A true CN104353176A (en) | 2015-02-18 |
| CN104353176B CN104353176B (en) | 2017-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410637644.1A Expired - Fee Related CN104353176B (en) | 2014-11-10 | 2014-11-10 | Medical operation sheath |
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| Country | Link |
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| CN (1) | CN104353176B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984458A (en) * | 2015-07-21 | 2015-10-21 | 中国人民解放军第三军医大学第二附属医院 | Medical operation sheath and use method of same |
| CN105476670A (en) * | 2016-01-20 | 2016-04-13 | 中国人民解放军第三军医大学第二附属医院 | Sheathing canal with adjustable canal diameter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4994070A (en) * | 1987-12-15 | 1991-02-19 | Waters Gerard A | Apparatus for dilating a body cavity |
| GB2275421A (en) * | 1993-02-25 | 1994-08-31 | Christopher Tiley | Speculum |
| JPH08103501A (en) * | 1994-10-03 | 1996-04-23 | Unitika Ltd | Living body tube cavity expansioner |
| CN103494598A (en) * | 2013-10-21 | 2014-01-08 | 武汉大学 | Disposable inflatable vaginal speculum |
| CN204246667U (en) * | 2014-11-10 | 2015-04-08 | 中国人民解放军第三军医大学第二附属医院 | A kind of medical operation sheath |
-
2014
- 2014-11-10 CN CN201410637644.1A patent/CN104353176B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4994070A (en) * | 1987-12-15 | 1991-02-19 | Waters Gerard A | Apparatus for dilating a body cavity |
| GB2275421A (en) * | 1993-02-25 | 1994-08-31 | Christopher Tiley | Speculum |
| JPH08103501A (en) * | 1994-10-03 | 1996-04-23 | Unitika Ltd | Living body tube cavity expansioner |
| CN103494598A (en) * | 2013-10-21 | 2014-01-08 | 武汉大学 | Disposable inflatable vaginal speculum |
| CN204246667U (en) * | 2014-11-10 | 2015-04-08 | 中国人民解放军第三军医大学第二附属医院 | A kind of medical operation sheath |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984458A (en) * | 2015-07-21 | 2015-10-21 | 中国人民解放军第三军医大学第二附属医院 | Medical operation sheath and use method of same |
| CN105476670A (en) * | 2016-01-20 | 2016-04-13 | 中国人民解放军第三军医大学第二附属医院 | Sheathing canal with adjustable canal diameter |
| CN105476670B (en) * | 2016-01-20 | 2017-10-13 | 中国人民解放军第三军医大学第二附属医院 | A kind of adjustable sheath of caliber |
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| Publication number | Publication date |
|---|---|
| CN104353176B (en) | 2017-05-03 |
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Granted publication date: 20170503 Termination date: 20201110 |
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