CN109771110B

CN109771110B - Blood vessel support

Info

Publication number: CN109771110B
Application number: CN201811543230.7A
Authority: CN
Inventors: 郝迎学; 钟华
Original assignee: First Affiliated Hospital of PLA Military Medical University
Current assignee: First Affiliated Hospital of PLA Military Medical University
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-10-13
Anticipated expiration: 2038-12-17
Also published as: CN109771110A

Abstract

The invention discloses a gripping device, which comprises a support frame and a gripping mechanism, wherein the support frame comprises a top plate and two support legs, the two support legs are oppositely arranged at two ends of the top plate and can move on the top plate, the height of each support leg is adjustable, and a fixing hole is formed in the bottom of each support leg; the gripping mechanism is arranged on the bottom surface of the top plate, can move on the top plate, and is adjustable in size and used for gripping iliac arteries. The blood vessel support can facilitate accurate grasping of the grasping mechanism, and can improve the right common iliac artery after grasping, so that the compression of the right common iliac artery on the right common iliac vein is relieved, and the smoothness of the left common iliac vein is kept.

Description

Blood vessel support

Technical Field

The invention relates to the field of medical instruments, in particular to a vascular stent.

Background

The iliac vein compression syndrome (also called May-Thurner syndrome (MTS)) is anatomically known to cause iliac vein compression because the left iliac common vein is more or less pushed anteriorly by the physiological lordosis of the lumbosacral vertebrae and, at the same time, the common iliac artery that spans the anterior side of the left iliac common vein is pushed posteriorly to be in a state of pushing anteriorly and posteriorly. Iliac vein compression syndrome may be manifested by discomfort, swelling, pain in the left lower limb, or deep vein thrombosis of the iliac femoral vein. The twenty-to-fifty years old is the high-grade stage of iliac vein compression syndrome, and women have three times higher incidence rate than men. Typically manifested as deep iliac-femoral vein thrombosis or chronic venous insufficiency. Chronic venous insufficiency is often manifested by symptoms of chronic venous hypertension, such as pain and swelling of the lower limbs, varicose veins or venous ulcers.

At present, the clinical treatment modes are as follows: by placing stents in both the iliac vein and the iliac artery. However, this approach has certain disadvantages: in order to ensure proper function of the stent, patients need to take anticoagulant drugs for life. However, the anticoagulant drugs have certain negative effects on the bodies of patients, particularly young patients, and the development of the bodies of the young patients is influenced.

Disclosure of Invention

In view of the above problems, the present invention provides a stent for blood vessels, which is placed outside the iliac vein and iliac artery, thereby solving the problems of the background art.

In order to achieve the purpose, the invention is realized by the following technical scheme: a vascular stent comprises

The supporting frame comprises a top plate and two supporting legs, the two supporting legs are oppositely arranged at two ends of the top plate and can move on the top plate, the height of each supporting leg is adjustable, and a fixing hole is formed in the bottom of each supporting leg; and

the gripping mechanism is arranged on the bottom surface of the top plate, can move on the top plate, and is adjustable in size and used for gripping the iliac artery.

Further, the supporting legs include lower margin, vaulting pole, first elastic component and locating part, the lower margin is the shape of falling U, the fixed orifices has been seted up on the bottom of lower margin, the upper end of lower margin is provided with branch, the guiding hole has been seted up along the axial to branch, the jack has been seted up to the side of branch, it is a plurality of, a plurality of the jack along the axial interval of branch sets up, the jack with the guiding hole intercommunication, vaulting pole slidable ground is inserted and is located in the guiding hole, first elastic component sets up in the guiding hole, first elastic component one end with the vaulting pole bottom offsets, and one end with in addition the branch bottom offsets, the locating part sets up on the vaulting pole, the locating part passes the jack and expose with branch.

Furthermore, the limiting part comprises an inserting tongue and a second elastic part, the inserting tongue penetrates out of the stay bar in the radial direction, the top end of the inserting tongue is arc-shaped, the second elastic part is arranged in the inserting tongue, one end of the second elastic part is connected with the stay bar, and the other end of the second elastic part is connected with the inserting tongue.

Furthermore, a plurality of sliding grooves which are intersected vertically and horizontally are formed in the top plate, and the top ends of the support rods penetrate through the sliding grooves and then are exposed out of the sliding grooves.

Furthermore, the end face, close to the top plate, of the support rod is provided with a limiting step, a third elastic piece is sleeved on the support rod, one end of the third elastic piece abuts against the limiting step, the other end of the third elastic piece abuts against the top plate, and the third elastic piece is in a compression state.

Further, gripping mechanism includes mounting panel and gripping subassembly, be provided with the slider on the top surface of mounting panel, the bottom surface of bottom plate is along the length direction of bottom plate is provided with the guide rail, the slider card is established in the guide rail, and can follow the guide rail slides, the gripping subassembly sets up the bottom surface of mounting panel.

Further, the gripping assembly comprises a telescopic driver, a top block, a first gripper, a second gripper, a first hinge point, a second hinge point, a first connecting rod and a second connecting rod, the telescopic driver is vertically arranged on the bottom surface of the mounting plate, the cross sections of the top block, the first gripper and the second gripper are all triangular, the first hinge point is arranged on the top plate, the second hinge point is arranged on a support extending downwards from the bottom surface of the mounting plate, the first gripper and the second gripper are arranged oppositely and parallelly, the middle part of the first gripper is hinged on the first hinge point, the top part of the second gripper is hinged on the second hinge point, the first connecting rod and the second connecting rod are arranged oppositely and parallelly, one edge of the top block is hinged with the telescopic driver in a universal mode, and the other two edges are hinged with end points of the first connecting rod and the second connecting rod respectively, the other end of the first connecting rod is hinged to the top of the first gripper, and the other end of the second connecting rod is hinged to the middle of the second gripper.

Furthermore, the telescopic driver comprises a fixed block and a screw rod, the fixed block is arranged on the bottom surface of the top plate through a support, threads are arranged in the fixed block, the screw rod penetrates through the fixed block and then is in universal hinge joint with one edge of the top plate, and the screw rod is meshed with the threads of the fixed block.

Furthermore, the opposite surfaces of the first gripper and the second gripper are provided with buffer blocks, the opposite surfaces of the buffer blocks are arc surfaces, the diameter of each arc surface is matched with the outer diameter of the iliac artery, and each arc surface is provided with a pressure sensor.

Further, the plurality of the gripping devices are arranged at intervals along the length direction of the top plate.

The invention has the beneficial effects that:

the common iliac artery stent comprises a support frame and a gripping mechanism, wherein the support frame is clamped on a top plate, and the whole blood vessel stent can be sewn on the sacrum through fixing holes on feet; the size of the gripping mechanism is adjustable, so that the gripping mechanism can be used for gripping the right common iliac arteries with different diameters in a shape fitting manner, the right common iliac artery can be firmly gripped, the height of the supporting legs is adjustable, the gripping mechanism can be used for facilitating accurate gripping of the gripping mechanism, the right common iliac artery can be lifted after gripping, the compression of the right common iliac artery on the left common iliac vein is relieved, and the smoothness of the left common iliac vein is guaranteed.

Drawings

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

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of a support foot according to the present invention;

FIG. 4 is a schematic view of the connection of the top block to the screw;

reference numerals: 1-abdominal aorta, 2-right common iliac artery, 3-left common iliac vein, 100-support frame, 110-roof, 111-chute, 112-guide rail, 120-supporting leg, 121-stay bar, 122-first elastic element, 123-second elastic element, 130-ground leg, 131-fixing hole, 132-support bar, 133-guide hole, 200-grasping mechanism, 210-mounting plate, 211-sliding block, 220-grasping component, 230-driver, 231-fixing block, 232-screw rod, 221-top block, 222-first grasping hand, 223-second grasping hand, 224-first hinge point, 225-second hinge point, 226-first connecting rod, 227-second connecting rod, 228-buffer block and 229-pressure sensor.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, which indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or structures must have a specific orientation, be constructed in a specific orientation, and be operated, and thus are not to be construed as limiting the present invention.

A blood vessel support 10 comprises a support frame 100 and a grasping mechanism 200, when in use, the support frame 100 is placed on the right common iliac artery 2 and the left common iliac vein 3 and is fixed on the mucosa on the sacrum for grasping the right common iliac artery 2. The support 100 is used for supporting the gripping mechanism 200.

Specifically, support 100 includes a top plate 110 and support feet 120. The tops of support legs 120 are disposed on top plate 110 and are movable on top plate 110. The height of support legs 120 is adjustable. The bottom of the supporting leg 120 is provided with a fixing hole 131. In this embodiment, the top plate 110 is a flat plate, and a plurality of sliding grooves 111 intersecting in a longitudinal and transverse direction are disposed on the top plate 110. The supporting foot 120 includes a foot leg 130, a stay 121, a first elastic member 122, and a stopper 140. Ground leg 130 includes an inverted U-shape. The bottom of the foot margin 130 is provided with a fixing hole 131. The fixing hole 131 is used to sew the entire stent on the mucosa of the sacrum. The upper end of lower margin 130 is provided with branch 132, and guiding hole 133 has been seted up along the axial to branch 132, and the jack has been seted up to the side of branch 132, and the jack has a plurality ofly, and a plurality of jacks set up along the axial interval of branch 132. The insertion hole communicates with the guide hole 133. The stay 121 is slidably inserted into the guide hole 133. The first elastic member 122 is disposed in the guide hole 133. One end of the first elastic member 122 abuts against the bottom of the supporting rod 121, and the other end abuts against the bottom of the supporting rod 132. The limiting member 140 is disposed on the supporting rod 121, and the limiting member 140 can pass through the insertion hole and be exposed out of the supporting rod 132.

The limiting member 140 includes a tongue 141 and a second elastic member 142. The insertion tongue 141 radially penetrates out of the stay 121. The second elastic member 142 is disposed in the insertion tongue 141. One end of the second elastic member 142 is connected to the stay 121, and the other end is connected to the tongue 141. When the leg support is used, the limiting member 140 is pressed downward along the axial direction of the insertion tongue 141, the limiting member 140 retreats into the supporting rod 132, and at this time, the supporting rod 121 is pulled upward or downward, so that the height of the leg support 120 can be adjusted.

In this embodiment, a limit step is provided on the end surface of the stay 121. The supporting rod 121 is sleeved with an elastic member, one end of the third elastic member 124 abuts against the handle, and the other end abuts against the top plate 110. The third elastic member 124 is in a compressed state. The stay 121 can be prevented from shaking in the slide groove 111 by the elastic action.

The plurality of gripping devices 200 are provided, and the plurality of gripping devices 200 are arranged at intervals along the longitudinal direction of the top plate 110. In the present embodiment, two gripping mechanisms 200 are provided. Is used for acting on different places of the right common iliac artery so as to balance the stress of the right common iliac artery. The gripping mechanism 200 comprises a mounting plate 210 and a gripping assembly 220, wherein a slide block 211 is arranged on the top surface of the mounting plate 210, a guide rail 112 is arranged on the bottom surface of the top plate 111 along the longitudinal direction of the top plate 111, and the slide block 211 is clamped in the guide rail 112 and can slide along the guide rail 112. The grip assembly 220 is mounted on the bottom surface of the mounting plate 210. The grasping assembly 220 includes a telescoping driver 230, a top block 221, a first grasping hand 222, a second grasping hand 223, a first hinge point 224, a second hinge point 225, a first link 226, and a second link 227. For grasping and securing the right common iliac artery. Specifically, the telescopic actuator 230 is vertically disposed on the bottom surface of the mounting plate 210. The telescopic driver 230 includes a fixing block 231 and a screw 232. The fixing block 231 is disposed below the mounting plate 210 by a bracket. The fixing block 231 is internally provided with a screw thread. The screw 232 is hinged with one edge of the top block 221 in a universal way after penetrating through the fixing block 231. The screw 232 is in threaded engagement with the fixing block 231.

The top block 221, the first gripper 222 and the second gripper 223 are all triangular in cross-section. The first hinge point 224 is disposed on the mounting plate 210 and the second hinge point is disposed on a bracket extending downward from the bottom surface of the mounting plate 210. The first grip 222 and the second grip 223 are disposed opposite and parallel. The middle portion of the first finger 222 is hinged at a first hinge point. The hinged top of the second finger 223 is at a second hinge point. The first connecting rod 226 and the second connecting rod 227 are arranged oppositely and parallelly. The other two edges of the top block 221 are hinged to the end points of the first link 226 and the second link 227 respectively. The other end of the first link 226 is hinged to the top of the first gripper 222. The other end of the second connecting rod 227 is hinged with the middle part of the second hand grip 223.

To prevent the blood vessel or other tissue from being scratched, the buffer blocks 228 are disposed on the surfaces of the first gripper 222 opposite to the second gripper 223. The opposite surface of the buffer block 228 is a circular arc surface. The diameter of the circular arc surface is directly matched with that of the right common iliac artery. Meanwhile, the arc surface is provided with a pressure sensor 229. When the two opposing bumpers 228 both interfere with and hug the right common iliac artery, the pressure sensor 229 alerts and stops rotating the screw 232.

When the right common iliac artery needs to be grasped, the screw 232 only needs to be rotated in the forward direction, and the screw 232 retreats and drives the jacking block 221, the first connecting rod 226 and the second connecting rod 227 to retreat. Under the pulling of the first link 226, the first gripper 222 rotates clockwise around the first hinge point 224; meanwhile, when the second connecting rod 227 is pulled, the second hand grip 223 rotates counterclockwise around the second hinge point 225, and the two opposite buffer blocks 228 move towards each other until the two buffer blocks 228 grip the right common iliac artery. When the right common iliac artery blood vessel needs to be loosened, only the screw rod 232 needs to be selected reversely, the screw rod 232 advances and drives the jacking block 221, the first connecting rod 226 and the second connecting rod 227 to advance, and the first gripper 222 rotates around the first hinge point 224 in the counterclockwise direction under the action of the first connecting rod 226; under the action of the second connecting rod 227, the second gripper 223 rotates clockwise around the second hinge point 225, and the two opposite buffer blocks 228 move back to back until the two buffer blocks 228 completely fall off the blood vessel of the right common iliac artery.

The using method of the blood vessel stent 10 specifically comprises the following steps:

the entire vascular stent 10 is placed over the abdominal aorta 1, right common iliac artery 2, and left common iliac vein 3 of the patient via the abdominal cavity. Then, pre-adjusting the supporting legs 120: pushing the support frames 100 to make the supporting feet 120 slide on the sliding grooves 111 on the top plate 110 until reaching the required position, then, putting down the blood vessel support 10 to make the ground feet 130 of one of the supporting feet 120 clamped above the right common iliac artery 2 and the left common iliac vein 3, and putting the other support frame 100 outside the abdominal aorta 1; the mounting plate 210 is then pushed, causing the mounting plate 210 to slide to a substantially desired position. Subsequently, the screw 232 is rotated reversely, the screw 232 advances and drives the top plate 110, the first connecting rod 226 and the second connecting rod 227 to advance, and the first handle 222 rotates around the first hinge point 224 counterclockwise under the action of the first connecting rod 226; under the action of the second connecting rod 227, the second gripper 223 rotates clockwise around the second hinge point 225, the two opposite buffer blocks 228 move back to back, when the distance between the buffer blocks 228 is greater than the right common iliac artery 2, the screw 232 stops rotating, then the limiting member 140 on the supporting leg 120 is pressed down, the limiting member 140 retreats until the insertion hole is removed, and meanwhile, the top plate 110 is pushed downwards until the first gripper 222 and the second gripper 223 of the gripping mechanism 200 and the right common iliac artery 2 are located on the same horizontal line. Thereafter, the stopper 140 and the top plate 110 are released, the insertion hole is newly inserted by the second elastic member 142, and the stopper 140 is tightly pressed against the insertion hole by the first elastic member 122.

Subsequently, the entire stent 10 is sewn to the mucosa on the sacrum through the fixing holes 131 by means of sewing. Finally, the screw 232 is rotated in the forward direction, and the screw 232 moves backward and drives the top plate 110, the first connecting rod 226 and the second connecting rod 227 to move backward. Under the pulling of the first link 226, the first gripper 222 rotates clockwise around the first hinge point 224; meanwhile, when the second connecting rod 227 is pulled, the second hand grip 223 rotates counterclockwise around the second hinge point 225, and the two opposite buffer blocks 228 move towards each other until the two buffer blocks 228 grip the blood vessel of the right common iliac artery 2. Complete the whole operation

The vascular stent 10 comprises a support frame 100 and a gripping mechanism 200, wherein the support frame 100 is clamped above the vascular stent 10, and the whole vascular stent 10 can be sewn on the sacrum through fixing holes 131 on feet 130; the top plate 110 is provided with a sliding slot 111, and the supporting leg 120 can slide in the sliding slot 111, so that the position of the supporting leg 120 is at the best position, and the height of the supporting leg 120 is adjustable, thereby facilitating accurate grasping of the grasping mechanism 200. The position between the first gripper 222 and the second gripper 223 of the gripping mechanism 200 is adjustable, so that the gripping device can be used for gripping the right common iliac artery 2 with different diameters, the right common iliac artery 2 can be firmly gripped, and the right common iliac artery 2 can be lifted after being gripped, so that the compression of the right common iliac artery 2 on the left common iliac vein 3 is relieved, and the smoothness of the left common iliac vein 3 is further kept. The bumper 228 may prevent the grasping mechanism 200 from scratching the blood vessel, and the pressure sensor 229 may prevent the grasping mechanism 200 from pinching the right common iliac artery 2. The two gripping mechanisms 200 can slide on the top plate, so that different parts of the right common iliac artery 2 can be gripped simultaneously, and the right common iliac artery 2 is stressed evenly.

It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.

Claims

1. A vascular stent, characterized by: comprises that

2. A vascular stent as in claim 1, wherein: the supporting legs include lower margin, vaulting pole, first elastic component and locating part, the lower margin is the shape of falling U, the fixed orifices has been seted up on the bottom of lower margin, the upper end of lower margin is provided with branch, the guiding hole has been seted up along the axial to branch, the jack has been seted up to the side of branch, the jack has a plurality ofly, and is a plurality of the jack along the axial interval of branch sets up, the jack with the guiding hole intercommunication, vaulting pole slidable ground is inserted and is located in the guiding hole, first elastic component sets up in the guiding hole, first elastic component one end with the vaulting pole bottom offsets, other one end with the branch bottom offsets, the locating part sets up on the vaulting pole, the locating part passes the jack and expose with branch.

3. A vascular stent as in claim 2, wherein: the limiting part comprises an inserting tongue and a second elastic part, the inserting tongue penetrates out of the support rod in the radial direction, the top end of the inserting tongue is arc-shaped, the second elastic part is arranged in the inserting tongue, one end of the second elastic part is connected with the support rod, and the other end of the second elastic part is connected with the inserting tongue.

4. A vascular stent as in claim 2, wherein: the top plate is provided with a plurality of sliding grooves which are intersected vertically and horizontally, and the top ends of the supporting rods penetrate through the sliding grooves and then are exposed out of the sliding grooves.

5. A vascular stent as in claim 4, wherein: the supporting rod is close to a limiting step is arranged on the end face of the top plate, a third elastic piece is sleeved on the supporting rod, one end of the third elastic piece abuts against the limiting step, the other end of the third elastic piece abuts against the top plate, and the third elastic piece is in a compression state.

6. A vascular stent as in claim 1, wherein: the gripping mechanism comprises a mounting plate and a gripping assembly, a sliding block is arranged on the top surface of the mounting plate, the bottom surface of the bottom plate is provided with a guide rail along the length direction of the bottom plate, the sliding block is clamped in the guide rail and can slide along the guide rail, and the gripping assembly is arranged on the bottom surface of the mounting plate.

7. A vascular stent as in claim 6, wherein: the gripping assembly comprises a telescopic driver, a top block, a first gripper, a second gripper, a first hinge point, a second hinge point, a first connecting rod and a second connecting rod, the telescopic driver is vertically arranged on the bottom surface of the mounting plate, the cross sections of the top block, the first gripper and the second gripper are all triangular, the first hinge point is arranged on the top plate, the second hinge point is arranged on a support extending downwards from the bottom surface of the mounting plate, the first gripper and the second gripper are arranged oppositely and parallelly, the middle part of the first gripper is hinged on the first hinge point, the top part of the second gripper is hinged on the second hinge point, the first connecting rod and the second connecting rod are arranged oppositely and parallelly, one edge of the top block is hinged in a universal direction with the telescopic driver, and the other two edges are hinged with end points of the first connecting rod and the second connecting rod respectively, the other end of the first connecting rod is hinged to the top of the first gripper, and the other end of the second connecting rod is hinged to the middle of the second gripper.

8. A vascular stent as in claim 7, wherein: the telescopic driver comprises a fixed block and a screw rod, the fixed block is arranged on the bottom surface of the top plate through a support, threads are arranged in the fixed block, the screw rod penetrates through the fixed block and then is in universal hinge joint with one edge of the top plate, and the screw rod is meshed with the threads of the fixed block.

9. A vascular stent as in claim 7, wherein: the surface of the first gripper opposite to the surface of the second gripper is provided with a buffer block, the surface of the buffer block opposite to the buffer block is an arc surface, the diameter of the arc surface is matched with the outer diameter of the iliac artery, and the arc surface is provided with a pressure sensor.

10. A vascular stent as in claim 8, wherein: the plurality of gripping devices are arranged at intervals along the length direction of the top plate.