CN108056795B - A hemostatic stent for surgery - Google Patents

Abstract

Translated fromChinese

本发明公开了一种心脏大血管手术用止血支架，其特征在于：包括外部套管（1）和内部旋转塞（2），内部旋转塞（2）套接于外部套管（1）内，内部旋转塞（2）的外壁与外部套管（1）的内壁紧压接触，内部旋转塞（2）与外部套管（1）转动连接；所述外部套管（1）由前段硬管（3）、中段软管（4）和后段硬管（5）组成，中段软管（4）为医用聚氨酯弹性管，前段硬管（3）和后段硬管（5）设置于中段软管（4）的两端并与中段软管（4）固定连接；所述内部旋转塞（2）设置于外部套管（1）内的一端固定连接有前端筒（6），外部套管（1）内壁上固定设置有固定座（7）。在本申请的技术方案中，通过血流阻断支架阻断血液从而获得清晰的手术视野，并且结构简单，阻断效果好。

The invention discloses a hemostatic stent for cardiac and large vessel surgery, which is characterized by comprising an outer sleeve (1) and an inner rotating plug (2), the inner rotating plug (2) being sleeved in the outer sleeve (1), The outer wall of the inner rotary plug (2) is in tight contact with the inner wall of the outer casing (1), and the inner rotary plug (2) is rotatably connected with the outer casing (1); 3) The middle section of the hose (4) and the rear section of the hard tube (5) are composed, the middle section of the hose (4) is a medical polyurethane elastic tube, and the front section of the hard tube (3) and the rear section of the hard tube (5) are arranged in the middle section of the hose The two ends of (4) are fixedly connected with the middle hose (4); one end of the inner rotary plug (2) arranged in the outer sleeve (1) is fixedly connected with the front end barrel (6), and the outer sleeve (1) ) A fixing seat (7) is fixedly arranged on the inner wall. In the technical solution of the present application, the blood is blocked by the blood flow blocking stent to obtain a clear surgical field of view, and the structure is simple and the blocking effect is good.

Description

Hemostatic support for operation

Technical Field

The invention relates to a hemostatic stent for operation, and belongs to the field of medical instruments.

Background

The heart is one of the most important organs in the vertebrate body and has the primary function of providing pressure for blood flow to move the blood to various parts of the body. The heart functions to promote blood flow, provide sufficient blood flow to organs and tissues to supply oxygen and various nutrients, and remove metabolic end products (such as carbon dioxide, inorganic salts, urea, uric acid, etc.), so that cells maintain normal metabolism and function. In heart major vascular surgery, it is often necessary to occlude a section of a blood vessel so that the adjacent vessel to the site of the occlusion can be opened for the surgical procedure. The existing occlusion methods are mainly performed using aortic clamps. However, the great cardiac vascular surgery usually requires a long operation time, and if the aorta is clamped by the aortic clamp for a long time for blocking the blood flow, certain damage can be caused to the outer wall of the aorta. Therefore, the aortic clamp needs to be loosened at regular time intervals in the operation process, the opening of the aortic clamp is loosened, blood flows out of the aorta, the blood loss in the operation is increased, and the operation risk is increased. And after the aortic forceps are loosened, a large amount of blood can be gushed into the operation field to shield the operation field, so that blood sucking operation is required, the operation is complicated, the operation time is prolonged, and the operation risk is further increased.

Disclosure of Invention

Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide the surgical hemostatic stent, wherein a blocking catheter is placed in a blood vessel, and blood is blocked by the blocking catheter, so that a clear surgical field is obtained. The blocking catheter is placed in a blood vessel, and the blood vessel wall cannot be damaged.

In order to solve the technical problems, the technical scheme adopted by the invention is that the surgical hemostatic stent comprises an external sleeve and an internal rotating plug, wherein the internal rotating plug is sleeved in the external sleeve, the outer wall of the internal rotating plug is in compressed contact with the inner wall of the external sleeve, and the internal rotating plug is rotationally connected with the external sleeve; the external sleeve consists of a front-section hard tube, a middle-section hose and a rear-section hard tube, the middle-section hose is a medical polyurethane elastic tube, and the front-section hard tube and the rear-section hard tube are arranged at two ends of the middle-section hose and are fixedly connected with the middle-section hose; one end of the internal rotating plug, which is arranged in the external sleeve, is fixedly connected with a front end barrel, the inner wall of the external sleeve is fixedly provided with a fixed seat, and the front end barrel penetrates through the fixed seat and is in threaded connection with the fixed seat; an expansion supporting assembly is arranged between one end of the internal rotating plug, which is arranged in the external sleeve, and the fixed seat, and the internal rotating plug displaces in the external sleeve and extrudes the expansion supporting assembly to enable the expansion supporting assembly to expand towards the outer wall of the external sleeve; the expansion supporting component comprises an upper end sleeving seat which is sleeved on the front end barrel and is rotationally connected with the front end barrel; a plurality of support rods are arranged between the upper end socket joint seat and the fixed seat, and two ends of each support rod are respectively fixedly connected with the upper end socket joint seat and the fixed seat; the support rod is arc-shaped, an elastic support sheet is arranged in the support rod, the elastic support sheet is an arc-shaped elastic metal sheet, and the elastic support sheet is arranged along the length extension direction of the support rod; the inside is provided with the inside cavity in the rotatory stopper of inside, and the one end of inside cavity and the inner space intercommunication of a front end section of thick bamboo, and the other end of inside cavity is provided with the shutoff and blocks up, and the shutoff blocks up the setting with inside rotatory stopper integrated into one piece.

The technical scheme of this application has set up outside sleeve pipe and inside rotation stopper, and in the operation process, at first temporarily cut off the blood flow with vascular pincers respectively at the both ends that need cut off the position of blood vessel, cuts open the blood vessel in the position that needs cut off, and the blood vessel only has a small amount of blood outflow owing to be cut off the blood flow this moment. The external sleeve is inserted into the blood vessel fracture at the position of the blood vessel, the position of the sleeve is fixed through the friction force between the outer surface of the external sleeve and the inner wall of the blood vessel, the vascular clamp is loosened, and blood cannot flow out of the fracture of the blood vessel due to the filling of the external sleeve. Make inside rotatory stopper extrusion expansion supporting component through removing inside rotatory stopper in outside sleeve pipe for expansion supporting component takes place to warp and extrudees outside sheathed tube middle section hose, and the middle section hose receives outside inflation external diameter grow to expansion supporting component's extrusion, thereby makes middle section hose outer wall and the further extrusion increase frictional force of vascular inner wall, makes outside sleeve pipe and vascular relative position further fixed. To the gasbag formula vascular area among the prior art earlier, the hemostatic scaffold of this application need not set up external aerating device, simple structure, and the simple operation degree is high.

Among the technical scheme of this application, because a front end section of thick bamboo and fixing base threaded connection, when rotatory stopper is rotatory in inside, inside rotatory stopper can follow outside sheathed tube length extending direction and remove to the outside sleeve pipe, when inside rotatory stopper remove cup joint the seat contact with the upper end, inside rotatory stopper cup joints the seat to the upper end and takes place the extrusion, the bracing piece that upper end cup jointed between seat and the fixing base receives can take place elastic deformation and extrude middle section hose inner wall and make the middle section hose take place elastic deformation after the extrusion.

The bracing piece sets up to the arc and can makes things convenient for the bracing piece to take place elastic deformation to the arc opening direction of bracing piece among the technical scheme of this application can be towards a front end section of thick bamboo, can guarantee the elastic deformation direction of bracing piece like this after the bracing piece receives the extrusion. The elastic support sheet is elastically deformed along with the support rod, and the extrusion force of the support rod to the middle section hose is improved.

When blood needs to be drawn from the blood vessel fracture in the operation process and whether the blood in the hemostatic stent is coagulated or not is seen, the blood in the hemostatic stent can be drawn only by penetrating the plugging plug with the puncture needle.

Preferably, the hemostatic scaffold for operation is characterized in that the inner surface of the middle hose is provided with an arc-shaped groove, and the position of the arc-shaped groove corresponds to the position of the support rod.

The arc-shaped groove on the inner surface of the middle section hose can facilitate the middle section hose to deform and expand outwards after being extruded by the supporting rod.

Preferably, in the hemostatic stent for operation, the inner walls of the two ends of the middle-section hose are respectively provided with a connecting step groove, the end parts of the front-section hard tube and the rear-section hard tube are respectively provided with a connecting sleeve, and the connecting sleeves are inserted into the connecting step grooves and are in threaded fit with the connecting step grooves.

The threaded connection through adapter sleeve and ring channel has increased hemostatic stent's connection leakproofness among the technical scheme of this application.

Preferably, the outer wall of the inner rotating plug is provided with a plurality of annular grooves, and the annular grooves are internally provided with annular rubber rings which are in pressing contact with the inner wall of the outer sleeve.

The annular rubber ring is in tight contact with the inner wall of the outer sleeve, so that the connection tightness between the outer sleeve and the inner rotating plug is improved.

Preferably, the fixing seat is fixedly arranged on the inner wall of the rear end of the front section hard tube, and the fixing seat and the front section hard tube are integrally formed.

Preferably, the front end of the front hard tube is conical, the rear end limiting disc is arranged on the outer surface of the rear end of the rear hard tube, and heparin is coated on the inner wall of the front hard tube.

The front end of anterior segment hard tube makes things convenient for the outside sleeve pipe to insert to intravascular for conical, and rear end spacing dish restriction outside sleeve pipe is too deep into intravascular, and the heparin of coating on the inner wall of anterior segment hard tube can prevent the blood coagulation in the vascular fracture.

Preferably, the inner wall of the front hard tube is provided with an internal limiting piece.

The internal limiting piece can limit the internal rotating plug, and the internal rotating plug is prevented from entering the position too deep in the external sleeve.

The invention has the advantages that: the technical scheme of this application has set up outside sleeve pipe and inside rotation stopper, and in the operation process, at first temporarily cut off the blood flow with vascular pincers respectively at the both ends that need cut off the position of blood vessel, cuts open the blood vessel in the position that needs cut off, and the blood vessel only has a small amount of blood outflow owing to be cut off the blood flow this moment. The external sleeve is inserted into the blood vessel fracture at the position of the blood vessel, the position of the sleeve is fixed through the friction force between the outer surface of the external sleeve and the inner wall of the blood vessel, the vascular clamp is loosened, and blood cannot flow out of the fracture of the blood vessel due to the filling of the external sleeve. Make inside rotatory stopper extrusion expansion supporting component through removing inside rotatory stopper in outside sleeve pipe for expansion supporting component takes place to warp and extrudees outside sheathed tube middle section hose, and the middle section hose receives outside inflation external diameter grow to expansion supporting component's extrusion, thereby makes middle section hose outer wall and the further extrusion increase frictional force of vascular inner wall, makes outside sleeve pipe and vascular relative position further fixed. To the gasbag formula vascular area among the prior art earlier, the hemostatic scaffold of this application need not set up external aerating device, simple structure, and the simple operation degree is high.

Drawings

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

fig. 2 is a schematic view of the internal structure of the outer sleeve and the inner rotating plug 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 surgical hemostatic stent, which comprises anexternal sleeve 1 and aninternal rotating plug 2, wherein theinternal rotating plug 2 is sleeved in theexternal sleeve 1, the outer wall of theinternal rotating plug 2 is in compressed contact with the inner wall of theexternal sleeve 1, and theinternal rotating plug 2 is rotationally connected with theexternal sleeve 1; theexternal sleeve 1 consists of a front-sectionhard tube 3, a middle-section hose 4 and a rear-sectionhard tube 5, the middle-section hose 4 is a medical polyurethane elastic tube, and the front-sectionhard tube 3 and the rear-sectionhard tube 5 are arranged at two ends of the middle-section hose 4 and are fixedly connected with the middle-section hose 4; one end of theinternal rotating plug 2, which is arranged in theexternal sleeve 1, is fixedly connected with afront end barrel 6, the inner wall of theexternal sleeve 1 is fixedly provided with a fixed seat 7, and thefront end barrel 6 penetrates through the fixed seat 7 and is in threaded connection with the fixed seat 7; a plurality ofsupport rods 9 are arranged between the upperend socket base 8 and the fixed base 7, and two ends of eachsupport rod 9 are respectively fixedly connected with the upperend socket base 8 and the fixed base 7; thesupport rod 9 is arc-shaped, anelastic support piece 10 is arranged in thesupport rod 9, theelastic support piece 10 is an arc-shaped elastic metal piece, and theelastic support piece 10 is arranged along the length extending direction of thesupport rod 9.

The technical scheme of this application has set up outsidesleeve pipe 1 and insiderotation stopper 2, and in the operation process, at first temporarily cut off the blood flow with vascular pincers respectively at the both ends that need cut off the position of blood vessel, cuts open the blood vessel at the position that needs cut off, and the blood vessel only has a small amount of blood outflow owing to being cut off the blood flow this moment. Theexternal sleeve 1 is inserted into the blood vessel fracture at the position of the blood vessel, the position of the sleeve is fixed through the friction force between the outer surface of theexternal sleeve 1 and the inner wall of the blood vessel, the vascular clamp is loosened, and blood cannot flow out of the fracture of the blood vessel due to the filling of theexternal sleeve 1. Through with insiderotatory stopper 2 remove inoutside sleeve pipe 1 and make insiderotatory stopper 2 extrusion expansion supporting component for expansion supporting component takes place to warp and extrudees outsidesleeve pipe 1'smiddle section hose 4, andmiddle section hose 4 receives outside inflation external diameter grow after expansion supporting component's the extrusion, thereby makes 4 outer walls of middle section hose and the further extrusion increase frictional force of vascular inner wall, makesoutside sleeve pipe 1 further fixed with the relative position of blood vessel. To the gasbag formula vascular area among the prior art earlier, the hemostatic scaffold of this application need not set up external aerating device, simple structure, and the simple operation degree is high.

Among the technical scheme of this application, because a front end section ofthick bamboo 6 and 7 threaded connection of fixing base, when insiderotatory stopper 2 is rotatory, insiderotatory stopper 2 can follow outsidesleeve pipe 1 removal ofoutside sleeve pipe 1's length extending direction, when insiderotatory stopper 2 remove with the upper endcup joint seat 8 contact, insiderotatory stopper 2cup joints seat 8 to the upper end and takes place the extrusion,bracing piece 9 between upper endcup joint seat 8 and the fixing base 7 receives can take place elastic deformation and extrude 4 inner walls of middle section hose and makemiddle section hose 4 take place elastic deformation after the extrusion.

Thebracing piece 9 sets up to the arc and can make things convenient forbracing piece 9 to take place elastic deformation to the arc opening direction ofbracing piece 9 among the technical scheme of this application can be towards the front end section ofthick bamboo 6, can guarantee the elastic deformation direction ofbracing piece 9 after thebracing piece 9 receives the extrusion like this. Theelastic support piece 10 elastically deforms along with thesupport rod 9, and the extrusion force of thesupport rod 9 on themiddle section hose 4 is improved.

An arc-shaped groove 11 is formed in the inner surface of themiddle hose 4, and the position of the arc-shaped groove 11 corresponds to the position of thesupport rod 9.

The arc-shaped groove 11 on the inner surface of themiddle section hose 4 can facilitate themiddle section hose 4 to deform and expand outwards after being extruded by thesupport rod 9.

Aninner cavity 12 is formed in the inner rotatingplug 2, one end of theinner cavity 12 is communicated with the inner space of thefront end barrel 6, asealing plug 13 is arranged at the other end of theinner cavity 12, and thesealing plug 13 and the inner rotatingplug 2 are integrally formed.

When blood in the hemostatic stent is needed to be collected from the blood vessel fracture in the operation process, the blood in the hemostatic stent can be collected only by penetrating thesealing plug 13 with the puncture needle.

The inner walls of the two ends of themiddle section hose 4 are respectively provided with a connectingstep groove 14, the end parts of the front sectionhard tube 3 and the rear sectionhard tube 5 are respectively provided with a connectingsleeve 15, and the connectingsleeves 15 are inserted in the connectingstep grooves 14 and are in threaded fit with the connectingstep grooves 14.

The threaded connection throughadapter sleeve 15 andannular groove 14 has increased hemostatic stent's connection leakproofness among the technical scheme of this application.

The outer wall of the innerrotary plug 2 is provided with a plurality ofannular grooves 16,annular rubber rings 17 are arranged in theannular grooves 16, and theannular rubber rings 17 are in pressing contact with the inner wall of theouter sleeve 1.

The compressed contact of theannular rubber ring 17 with the inner wall of theouter casing 1 increases the tightness of the connection between theouter casing 1 and theinner plug 2.

Fixing base 7 is fixed to be set up on the rear end inner wall of anterior segmenthard tube 3, and fixing base 7 sets up with anterior segmenthard tube 3 integrated into one piece.

The front end of the front sectionhard tube 3 is conical, the rearend limiting disc 18 is arranged on the outer surface of the rear end of the rear sectionhard tube 5, and heparin is coated on the inner wall of the front sectionhard tube 3.

The front end of anterior segmenthard tube 3 is conical and makes things convenient foroutside sleeve pipe 1 to insert intravascular, and rearend spacing dish 18 restriction outsidesleeve pipe 1 is too deep into intravascular, and the heparin of coating on the inner wall of anterior segmenthard tube 3 can prevent the blood coagulation in the vascular fracture.

An inner limitingsheet 19 is arranged on the inner wall of the front sectionhard tube 3.

Theinternal stopper piece 19 can limit theinternal rotation plug 2, and prevent theinternal rotation plug 2 from entering theexternal sleeve 1 to an excessively deep position.

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 (7)

1. A hemostasis support for heart great vessel operation is characterized in that: the anti-explosion device comprises an external sleeve (1) and an internal rotating plug (2), wherein the internal rotating plug (2) is sleeved in the external sleeve (1), the outer wall of the internal rotating plug (2) is in compressed contact with the inner wall of the external sleeve (1), and the internal rotating plug (2) is rotatably connected with the external sleeve (1); the external sleeve (1) consists of a front-section hard tube (3), a middle-section hose (4) and a rear-section hard tube (5), the middle-section hose (4) is a medical polyurethane elastic tube, and the front-section hard tube (3) and the rear-section hard tube (5) are arranged at two ends of the middle-section hose (4) and are fixedly connected with the middle-section hose (4); one end of the inner rotating plug (2) arranged in the outer sleeve (1) is fixedly connected with a front end barrel (6), the inner wall of the outer sleeve (1) is fixedly provided with a fixed seat (7), and the front end barrel (6) penetrates through the fixed seat (7) and is in threaded connection with the fixed seat (7); an expansion supporting component is arranged between one end of the inner rotating plug (2) arranged in the outer sleeve (1) and the fixed seat (7), and the inner rotating plug (2) displaces in the outer sleeve (1) and extrudes the expansion supporting component to expand the expansion supporting component towards the outer wall direction of the outer sleeve (1); the expansion supporting component comprises an upper end sleeving seat (8), and the upper end sleeving seat (8) is sleeved on the front end barrel (6) and is rotatably connected with the front end barrel (6); a plurality of support rods (9) are arranged between the upper end socket base (8) and the fixed base (7), and two ends of each support rod (9) are respectively fixedly connected with the upper end socket base (8) and the fixed base (7); the support rod (9) is arc-shaped, an elastic support sheet (10) is arranged in the support rod (9), the elastic support sheet (10) is an arc-shaped elastic metal sheet, and the elastic support sheet (10) is arranged along the length extension direction of the support rod (9); an inner cavity (12) is arranged in the inner rotating plug (2), one end of the inner cavity (12) is communicated with the inner space of the front end barrel (6), a plugging plug (13) is arranged at the other end of the inner cavity (12), and the plugging plug (13) and the inner rotating plug (2) are integrally formed.

2. A surgical hemostatic stent according to claim 1, wherein: an arc-shaped groove (11) is formed in the inner surface of the middle hose (4), and the position of the arc-shaped groove (11) corresponds to the position of the supporting rod (9).

3. A surgical hemostatic stent according to claim 1, wherein: the inner walls of two ends of the middle section hose (4) are respectively provided with a connecting step groove (14), the end parts of the front section hard pipe (3) and the rear section hard pipe (5) are respectively provided with a connecting sleeve (15), and the connecting sleeves (15) are inserted in the connecting step grooves (14) and are in threaded fit with the connecting step grooves (14).

4. A surgical hemostatic stent according to claim 1, wherein: a plurality of annular grooves (16) are formed in the outer wall of the inner rotating plug (2), annular rubber rings (17) are arranged in the annular grooves (16), and the annular rubber rings (17) are in pressing contact with the inner wall of the outer sleeve (1).

5. A surgical hemostatic stent according to claim 1, wherein: fixing base (7) are fixed to be set up on the rear end inner wall of anterior segment hard tube (3), and fixing base (7) and anterior segment hard tube (3) integrated into one piece set up.

6. A surgical hemostatic stent according to claim 1, wherein: the front end of the front section hard tube (3) is conical, a rear end limiting disc (18) is arranged on the outer surface of the rear end of the rear section hard tube (5), and heparin is coated on the inner wall of the front section hard tube (3).

7. A surgical hemostatic stent according to claim 1, wherein: an inner limiting sheet (19) is arranged on the inner wall of the front section hard tube (3).

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