CN107693081B - Blood flow blocking support for operation - Google Patents

Abstract

The invention discloses a blood flow blocking bracket for surgery, which comprises an outer bracket tube (1) and an inner bracket tube (2), wherein the inner bracket tube (2) is inserted into the outer bracket tube (1) and is rotationally connected with the outer bracket tube (1); external threads are arranged outside the support inner tube (2), an annular step protrusion (3) is arranged on the inner wall of the support outer tube (1), internal threads are arranged on the inner ring surface of the annular step protrusion (3), and the external threads of the support inner tube (2) are matched with the internal threads of the annular step protrusion (3); the outer wall of the support inner pipe (2) is provided with an annular groove (4), the support inner pipe (2) is sleeved with a rotating supporting ring (5), and the rotating supporting ring (5) is arranged in the annular groove (4). In the technical scheme of this application, thereby block the support through the blood flow and block blood and obtain clear operation field of vision to simple structure blocks effectually.

Description

Blood flow blocking support for operation

Technical Field

The invention relates to a blood flow blocking bracket for operation, belonging to the field of medical instruments.

Background

The damage of the root of the hepatic vein and the posthepatic inferior vena cava is one of the most difficult cases to treat in abdominal trauma surgery, the mortality rate is extremely high, and can even reach 80-100% in a few cases of diagnosis and treatment centers, the reason is that the wound is extremely difficult to expose, even if the wound is barely exposed, the wound is at the cost of massive hemorrhage and/or air embolism, and a clear operation view can not be obtained.

The prior art discloses a blood flow blocking device (with the patent number of CN 201510748887.7) for liver surgery, which can prevent the outflow of inferior vena cava blood from a wound, obtain a clear surgical field and facilitate the repair of a damaged part of a blood vessel. Although the blood flow blocking device for liver surgery in the prior art can achieve the effect of blocking blood flow, a small amount of blood leaks from the position between the valves to the surgical field. In addition, the blood flow blocking device for liver surgery in the prior art is complex in structure and inconvenient to manufacture.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing the blood flow blocking bracket for the operation, wherein the blood flow blocking bracket is placed in a blood vessel in the operation process, the blood is blocked by the blood flow blocking bracket, so that a clear operation visual field is obtained, the structure is simple, and the blocking effect is good.

In order to solve the technical problems, the invention adopts the technical scheme that the blood flow blocking bracket for the operation comprises an outer bracket tube and an inner bracket tube, wherein the inner bracket tube is inserted in the outer bracket tube and is rotationally connected with the outer bracket tube; the outer part of the inner pipe of the bracket is provided with an external thread, the inner wall of the outer pipe of the bracket is provided with an annular step bulge, the inner ring surface of the annular step bulge is provided with an internal thread, and the external thread of the inner pipe of the bracket and the internal thread of the annular step bulge are arranged in a matching way; an annular groove is formed in the outer wall of the support inner pipe, a rotating support ring is sleeved on the support inner pipe and arranged in the annular groove, and the outer surface of the rotating support ring is in sliding contact with the inner surface of the annular groove; the support device is characterized in that a plurality of outer pipe hinged support lugs are fixedly arranged on the inner wall of the middle section of the outer pipe of the support, a support ring hinged support lug is arranged on the outer ring surface of the rotating support ring, an expansion support rod is arranged between the rotating support ring and the inner wall of the outer pipe of the support, and two ends of the expansion support rod are respectively hinged to the support ring hinged support lugs and the outer pipe hinged support lugs.

According to the technical scheme, the support outer tube and the support inner tube are arranged, the support outer tube is inserted into a lower cavity venous blood vessel in the operation process, and the support inner tube is rotated manually, so that the support inner tube moves towards the tail end of the support outer tube in the rotation process. At the in-process that the support inner tube removed, the supporting ring shift position thereupon rotates, after the supporting ring removes rotates, the distance between the articulated journal stirrup of supporting ring and the articulated journal stirrup of outer tube also changes thereupon, thereby make the middle section outer wall that the expansion bracing piece outwards propped up the support outer tube, make to form a plurality of archs on the middle section outer wall of support outer tube, the arch of propping up through the expansion bracing piece has increased the frictional force between support outer tube and the blood vessel inner wall, thereby made things convenient for the blood flow to block the rigidity of support in the blood vessel, at the operation in-process, can not cause the device to shift because of the muscle wriggling, use reliability has been improved. Compared with the blood flow blocking device in the prior art, the blood flow blocking device is simple in structure, few in required parts, low in manufacturing difficulty and capable of achieving the same effect. One end opening is sealed to support inner tube one end among the technical scheme of this application, and its open end sets up in the support outer tube, and the blind end sets up outside the support outer tube, and the protruding space between closed support inner tube outer wall and the support outer tube inner wall of annular step has reduced the inside gap that the blood flow blocked the support like this, prevents that blood from gap department outflow.

According to the technical scheme, partial heparin serving as an anticoagulant can be pre-filled in the outer tube and the inner tube of the stent, and the heparin serving as a common anticoagulant is mainly used for thromboembolic diseases, myocardial infarction, cardiovascular surgery, cardiac catheter examination, extracorporeal circulation, hemodialysis and the like clinically. The application to the liver is because heparin is first found with liver cells and applied to the liver can achieve an unexpected anticoagulant effect. The device can prevent local thrombus from happening due to overlong time in the blood vessel, and the success probability of the operation is ensured.

Preferably, the blood flow blocking bracket for the operation comprises an outer tube, an outer tube middle section and an outer tube rear section, wherein the outer tube of the bracket comprises the outer tube front section, the outer tube middle section and the outer tube rear section which are sequentially connected, and the outer tube front section is in threaded connection with the outer tube middle section and the outer tube middle section is in threaded connection with the outer tube rear section; the middle section of the outer tube is a medical silicon rubber hose. In order to facilitate the blood flow blocking stent to enter a blood vessel, the front end of the front section of the outer tube can be set to be conical.

In the technical scheme of this application, set up the support outer tube into the form by outer tube anterior segment, outer tube middle section and outer tube back end threaded connection in proper order, can select different outer tube anterior segments and the material and the shape of outer tube back end like this according to the procedure condition, the outer tube middle section adopts medical silicon rubber hose because silicon rubber elasticity is better, makes things convenient for the expansion bracing piece to prop up the outer tube middle section and makes its surface form protruding.

Preferably, the front section of the outer tube and the rear section of the outer tube are medical polylactic acid tubes.

Preferably, the inner wall of the outer tube of the stent is provided with a plurality of annular fixing bulges, and the inner annular surfaces of the annular fixing bulges are in sliding contact with the outer surface of the inner tube of the stent.

In the rotating process, if the inner tube of the bracket and the outer tube of the rotating bracket can not keep good coaxiality, the inner tube of the bracket can be blocked. In order to keep the axiality of rotating the support outer tube in the rotatory in-process of support inner tube, set up a plurality of annular fixed protrusions on the inner wall of support outer tube among the technical scheme of this application to keep the axiality of rotatory in-process support inner tube and commentaries on classics support outer tube.

Preferably, the blood flow blocking stent for the operation is characterized in that the stent inner tube is in a hollow tubular shape, a sealing plug is arranged in one end of the stent inner tube, which is arranged outside the stent outer tube, and the sealing plug is fixedly connected with the stent inner tube.

Preferably, the surgical blood flow blocking stent is characterized in that an internal thread is arranged in the end part of the stent inner tube, and the blocking plug is in threaded connection with the internal thread in the end part of the stent inner tube; the thickness of the middle part of the end part of the sealing plug is larger than that of the edge of the end part of the sealing plug.

The technical scheme of this application has set up the shutoff and has blockked up for the one end that the shutoff support inner tube is located the support outer tube. If thrombus or blood coagulation occurs at the cross section of the blood vessel in the operation process, a sharp object can be used for puncturing the middle part of the blocked end part so as to enable blood to flow out slightly and relieve the thrombus or blood coagulation.

Preferably, the blood flow blocking stent for the operation has the advantages that the tail end of the outer tube of the stent is provided with the annular supporting sheet, and the diameter of the outer annular surface of the annular supporting sheet is larger than the outer diameter of the outer tube of the stent.

The arrangement of the annular supporting sheet can prevent the blood flow blocking bracket from excessively penetrating into a blood vessel, and the blood flow blocking bracket is convenient to take out when the operation is finished.

Preferably, in the blood flow blocking stent for operation, the outer surface of the end part of the inner stent tube, which is arranged at one end of the outer stent tube, is provided with an annular end part plugging bulge, and the outer annular surface of the end part plugging bulge is in contact with the inner surface of the outer stent tube.

The technical scheme of this application has set up the tip shutoff arch to further fill the space between support inner tube outer wall and the support outer tube inner wall, prevent that blood from flowing from the gap.

Preferably, the wall thickness of the middle section of the outer tube is smaller than the wall thickness of the two ends of the middle section of the outer tube.

The wall thickness of the middle part of the middle section of the outer pipe is smaller than the wall thickness of the two ends of the middle section of the outer pipe, so that the outer wall of the middle section of the outer pipe can be jacked up by the expansion supporting rod to form a bulge.

Preferably, the blood flow blocking stent for the operation is an arc-shaped metal support rod.

The invention has the advantages that: according to the technical scheme, the support outer tube and the support inner tube are arranged, the support outer tube is inserted into a lower cavity venous blood vessel in the operation process, and the support inner tube is rotated manually, so that the support inner tube moves towards the tail end of the support outer tube in the rotation process. At the in-process that the support inner tube removed, the supporting ring shift position thereupon rotates, after the supporting ring removes rotates, the distance between the articulated journal stirrup of supporting ring and the articulated journal stirrup of outer tube also changes thereupon, thereby make the middle section outer wall that the expansion bracing piece outwards propped up the support outer tube, make to form a plurality of archs on the middle section outer wall of support outer tube, the arch of propping up through the expansion bracing piece has increased the frictional force between support outer tube and the blood vessel inner wall, thereby made things convenient for the blood flow to block the rigidity of support in the blood vessel, at the operation in-process, can not cause the device to shift because of the muscle wriggling, use reliability has been improved. Compared with the blood flow blocking device in the prior art, the blood flow blocking device is simple in structure, few in required parts, low in manufacturing difficulty and capable of achieving the same effect. And its blood flow of the blood flow blocking support of the technical scheme of this application blocks the blood flow blocking device that the effect is better than among the prior art, and the leakproofness is good. The material and the shape of the front section and the rear section of the outer tube can be selected according to different operation conditions, and the applicability is wide.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention.

Detailed Description

The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Detailed Description

The invention relates to a blood flow blocking bracket for operation, which comprises anouter bracket tube 1 and aninner bracket tube 2, wherein theinner bracket tube 2 is inserted in theouter bracket tube 1 and is rotationally connected with theouter bracket tube 1; an external thread is arranged outside theinner pipe 2 of the bracket, anannular step bulge 3 is arranged on the inner wall of theouter pipe 1 of the bracket, an internal thread is arranged on the inner ring surface of theannular step bulge 3, and the external thread of theinner pipe 2 of the bracket and the internal thread of theannular step bulge 3 are arranged in a matching way; anannular groove 4 is formed in the outer wall of the supportinner pipe 2, a rotatingsupport ring 5 is sleeved on the supportinner pipe 2, the rotatingsupport ring 5 is arranged in theannular groove 4, and the outer surface of the rotatingsupport ring 5 is in sliding contact with the inner surface of theannular groove 4; the support is characterized in that a plurality of outer pipe hingedsupport lugs 6 are fixedly arranged on the inner wall of the middle section of theouter pipe 1 of the support, a support ring hingedsupport lug 7 is arranged on the outer ring surface of the rotatingsupport ring 5, an expansion support rod 8 is arranged between the rotatingsupport ring 5 and the inner wall of theouter pipe 1 of the support, and two ends of the expansion support rod 8 are respectively hinged to the support ring hingedsupport lugs 7 and the outer pipe hingedsupport lugs 6.

In the technical scheme of this application, set up supportouter tube 1 and supportinner tube 2, at the operation in-process, insert supportouter tube 1 in the cavity of the lower orifices vein blood vessel, manual rotatory supportinner tube 2 for 2 rotatory in-process in the support inner tube move to 1 tail end direction of support outer tube. In the in-process that removes at supportinner tube 2,rotation support ring 5 shift position along with it, afterrotation support ring 5 removes, the distance between articulatedjournal stirrup 7 of support ring and the articulatedjournal stirrup 6 of outer tube also changes thereupon, thereby make the middle section outer wall of the outside supportouter tube 1 of expansion bracing piece 8, make and form a plurality of archs on the middle section outer wall of supportouter tube 1, the arch of propping up through expansion bracing piece 8 has increased the frictional force between supportouter tube 1 and the blood vessel inner wall, thereby made things convenient for the blood flow to block the rigidity of support in the blood vessel, in the operation process, can not cause the device to shift because of the muscle wriggling, use reliability is improved. Compared with the blood flow blocking device in the prior art, the blood flow blocking device is simple in structure, few in required parts, low in manufacturing difficulty and capable of achieving the same effect. The utility model provides a one end opening is sealed to 2 one end in the support inner tube among the technical scheme of this application, and its open end sets up in supportouter tube 1, and the blind end sets up outside supportouter tube 1, and annular step is protruding 3 and is sealed the space between 2 outer walls in the support inner tube and the 1 inner wall of support outer tube, has reduced the inside gap that the blood flow blocked the support like this, prevents that blood from flowing from gap department.

According to the technical scheme, partial heparin serving as an anticoagulant can be pre-filled in theouter stent tube 1 and theinner stent tube 2, and the heparin serving as a common anticoagulant is mainly used for thromboembolic diseases, myocardial infarction, cardiovascular surgery, cardiac catheter examination, extracorporeal circulation, hemodialysis and the like clinically. The application to the liver is because heparin is first found with liver cells and applied to the liver can achieve an unexpected anticoagulant effect. The device can prevent local thrombus from happening due to overlong time in the blood vessel, and the success probability of the operation is ensured.

Theouter tube 1 of the bracket comprises an outertube front section 9, an outertube middle section 10 and an outer tuberear section 11, wherein the outertube front section 9, the outertube middle section 10 and the outer tuberear section 11 are sequentially connected, and the outertube front section 9 is in threaded connection with the outertube middle section 10, and the outertube middle section 10 is in threaded connection with the outer tuberear section 11; themiddle section 10 of the outer tube is a medical silicon rubber hose. In order to facilitate the blood flow blocking stent to enter the blood vessel, the front end of thefront section 9 of the outer tube can be set to be conical.

Among the technical scheme of this application, set up supportouter tube 1 into the form by outer tubeanterior segment 9, outertube middle section 10 and outer tube backend 11 threaded connection in proper order, can select different outer tubeanterior segment 9 and outertube back end 11's material and shape according to the procedure condition like this, outertube middle section 10 adopts medical silicon rubber hose because silicon rubber elasticity is better, makes things convenient for expansion bracing piece 8 to prop up outertube middle section 10 and makes its surface form protruding.

Thefront section 9 and therear section 11 of the outer tube are medical polylactic acid tubes.

The inner wall of theouter pipe 1 of the bracket is provided with a plurality of annular fixing bulges 12, and the inner annular surfaces of theannular fixing bulges 12 are in sliding contact with the outer surface of theinner pipe 2 of the bracket.

In the rotating process, if the stentinner tube 2 and the rotating stentouter tube 1 cannot keep good coaxiality, the stentinner tube 2 can be blocked. In order to keep the coaxiality of the bracketinner tube 2 and the rotating bracketouter tube 1 in the rotating process, a plurality ofannular fixing protrusions 12 are arranged on the inner wall of the bracketouter tube 1 in the technical scheme of the application so as to keep the coaxiality of the bracketinner tube 2 and the rotating bracketouter tube 1 in the rotating process.

The supportinner tube 2 is in a hollow tubular shape, asealing plug 13 is arranged in one end of the supportinner tube 2, which is arranged outside the supportouter tube 1, and thesealing plug 13 is fixedly connected with the supportinner tube 2.

An internal thread is arranged in the end part of the supportinner tube 2, and theplugging plug 13 is in threaded connection with the internal thread in the end part of the supportinner tube 2; the end middle portion of theplug 13 has a thickness greater than the end edge thickness of theplug 13.

The technical scheme of this application has set upshutoff stopper 13 for shutoff supportinner tube 2 is located the outer one end of supportouter tube 1. If thrombus or blood coagulation occurs at the section of the blood vessel in the operation process, a sharp object can be used for puncturing the middle part of the end part of the blockingplug 13 so as to enable blood to flow out slightly and relieve the thrombus or blood coagulation.

The tail end of the stentouter tube 1 is provided with a ring-shaped supportingpiece 14, and the diameter of the outer ring surface of the ring-shaped supportingpiece 14 is larger than the outer diameter of the stentouter tube 1.

Theannular support sheet 14 can prevent the blood flow blocking stent from excessively penetrating into the blood vessel, and the blood flow blocking stent can be conveniently taken out at the end of the operation.

The outer surface of the end part of theinner bracket tube 2, which is arranged at one end of theouter bracket tube 1, is provided with an annular endpart plugging bulge 15, and the outer annular surface of the endpart plugging bulge 15 is in contact with the inner surface of theouter bracket tube 1.

Set uptip shutoff arch 15 among the technical scheme of this application to further fill the space between 2 outer walls of support inner tube and the 1 inner wall of support outer tube, prevent that blood from flowing out from the gap.

The wall thickness of the middle part of themiddle section 10 of the outer tube is smaller than the wall thickness of the two ends of themiddle section 10 of the outer tube.

The wall thickness of the middle part of the outer tubemiddle section 10 is smaller than the wall thickness of the two ends of the outer tubemiddle section 10, so that the expansion supporting rod 8 can conveniently jack up the outer wall of the outer tubemiddle section 10 to form a bulge.

The expansion supporting rod 8 is an arc-shaped metal supporting rod.

The expansion supporting rod 8 is set to be arc-shaped, so that jamming can be reduced in the action process of the expansion supporting rod 8.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.

Claims (10)

1. A blood flow blocking stent for surgery, characterized in that: the device comprises a support outer tube (1) and a support inner tube (2), wherein the support inner tube (2) is inserted into the support outer tube (1) and is rotationally connected with the support outer tube (1); external threads are arranged outside the support inner tube (2), an annular step protrusion (3) is arranged on the inner wall of the support outer tube (1), internal threads are arranged on the inner ring surface of the annular step protrusion (3), and the external threads of the support inner tube (2) are matched with the internal threads of the annular step protrusion (3); an annular groove (4) is formed in the outer wall of the support inner pipe (2), a rotating supporting ring (5) is sleeved on the support inner pipe (2), the rotating supporting ring (5) is arranged in the annular groove (4), and the outer surface of the rotating supporting ring (5) is in sliding contact with the inner surface of the annular groove (4); the support is characterized in that a plurality of outer pipe hinged support lugs (6) are fixedly arranged on the inner wall of the middle section of the support outer pipe (1), a support ring hinged support lug (7) is arranged on the outer annular surface of the rotating support ring (5), an expansion support rod (8) is arranged between the rotating support ring (5) and the inner wall of the support outer pipe (1), and two ends of the expansion support rod (8) are respectively hinged with the support ring hinged support lug (7) and the outer pipe hinged support lug (6).

2. The surgical blood flow blocking stent of claim 1, wherein: the outer tube (1) of the support comprises an outer tube front section (9), an outer tube middle section (10) and an outer tube rear section (11), wherein the outer tube front section (9), the outer tube middle section (10) and the outer tube rear section (11) are sequentially connected, and the outer tube front section (9) is in threaded connection with the outer tube middle section (10) and the outer tube middle section (10) is in threaded connection with the outer tube rear section (11); the middle section (10) of the outer tube is a medical silicon rubber hose.

3. The surgical blood flow blocking stent of claim 1, wherein: the front section (9) and the rear section (11) of the outer tube are medical polylactic acid tubes.

4. The surgical blood flow blocking stent of claim 1, wherein: the inner wall of the outer support tube (1) is provided with a plurality of annular fixing bulges (12), and the inner annular surfaces of the annular fixing bulges (12) are in sliding contact with the outer surface of the inner support tube (2).

5. The surgical blood flow blocking stent of claim 1, wherein: the support inner tube (2) is in a hollow tubular shape, a plugging plug (13) is arranged in one end, outside the support outer tube (1), of the support inner tube (2), and the plugging plug (13) is fixedly connected with the support inner tube (2).

6. The surgical blood flow blocking stent of claim 5, wherein: an internal thread is arranged in the end part of the support inner tube (2), and a sealing plug (13) is in threaded connection with the internal thread in the end part of the support inner tube (2); the thickness of the middle part of the end part of the sealing plug (13) is larger than that of the edge of the end part of the sealing plug (13).

7. The surgical blood flow blocking stent of claim 1, wherein: the tail end of the outer tube (1) of the bracket is provided with an annular supporting piece (14), and the diameter of the outer annular surface of the annular supporting piece (14) is larger than the outer diameter of the outer tube (1) of the bracket.

8. The surgical blood flow blocking stent of claim 1, wherein: the outer ring surface of the end part of the inner support tube (2) arranged at one end of the outer support tube (1) is provided with an annular end part plugging bulge (15), and the outer ring surface of the end part plugging bulge (15) is in contact with the inner surface of the outer support tube (1).

9. The surgical blood flow blocking stent of claim 2, wherein: the wall thickness of the middle part of the outer tube middle section (10) is smaller than the wall thickness of the two ends of the outer tube middle section (10).

10. The surgical blood flow blocking stent of claim 1, wherein: the expansion supporting rod (8) is an arc-shaped metal supporting rod.

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