Hemostasis device for femoral medullary cavity

Abstract

The utility model provides a hemostasis device for a femoral medullary cavity. The hemostasis device comprises a guider, a first bag body, a second bag body, an overflow hole, a first injection port, a second injection port and a sealing piece. A first bag body is wrapped outside the guider, a pressurizing bag cavity is arranged between the guider and the first bag body, a second bag body is wrapped outside the first bag body, a liquid storage bag cavity is arranged between the first bag body and the second bag body, and a group of liquid overflow holes communicated with the liquid storage bag cavity are further formed in the second bag body. A pressurizing medium is injected into the pressurizing bag cavity through the first injection port, so that the first bag body expands outwards until the blood stopping medium in the liquid storage bag cavity overflows from the liquid overflowing hole, the blood stopping medium enters a medullary cavity, the blood stopping medium is injected into the pressurizing bag cavity through the second injection port, and the blood stopping medium in the liquid storage bag cavity flows out from the liquid overflowing hole. Meanwhile, the second capsule body is attached to the inner surface of the medullary cavity, the wound surface in the medullary cavity is pressurized, and the dual hemostasis effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a hemostatic device for femoral marrow cavity. BACKGROUND

[0002] With the continuous development of femoral intertrochanteric fracture internal fixation operation, the hemostasis problem in femoral intertrochanteric fracture internal fixation operation has been a difficult problem faced by orthopedic physicians so far. Research has found that blood exudation of intramedullary and soft tissue, blood residue and hemolysis reaction in joint, tissue gap are the main causes of bleeding in femoral intertrochanteric fracture internal fixation operation. In femoral intertrochanteric fracture intramedullary fixation operation, medical staff usually need to operate to destroy the femoral marrow cavity, which will cause rapid bleeding in the marrow cavity, and the bleeding volume is large. Because the space in the marrow cavity is relatively small, the field of vision and the operable space of medical staff are not large, and it is difficult to quickly execute the medicine and compression hemostasis of the bleeding position of the marrow cavity. UTILITARY MODEL CONTENT

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a hemostatic device for femoral marrow cavity, which improves the hemostatic effect and efficiency in the femoral marrow cavity.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme:

[0005] A hemostatic device for femoral marrow cavity, comprising a guide, the guide is coated with a first capsule, the material of the first capsule has elasticity, a pressurized capsule cavity is arranged between the guide and the first capsule; the first capsule is coated with a second capsule, the second capsule is soft, a liquid storage capsule cavity is arranged between the first capsule and the second capsule; a group of overflow holes are arranged on the second capsule and communicated with the liquid storage capsule cavity; a first injection port and a second injection port are further included, the first injection port and the second injection port are respectively communicated with the pressurized capsule cavity and the liquid storage capsule cavity; a sealing element is arranged on the second injection port; the second injection port is used for injecting hemostatic liquid into the liquid storage capsule cavity, and the sealing element is used for preventing the hemostatic liquid in the liquid storage capsule cavity from flowing out of the second injection port; the first injection port is used for injecting pressurized medium into the pressurized capsule cavity, so that the first capsule expands outward to overflow the hemostatic liquid in the liquid storage capsule cavity from the overflow holes.

[0006] Based on the above structure, the principle of the device for stopping bleeding in the femoral medullary cavity is that the proximal end of the bleeding stopping device is sent forward into the bleeding position in the medullary cavity, the guide has a radial size smaller than the radial size of the medullary cavity, the second capsule has a soft quality, the material of the first capsule has elasticity, and the first capsule is convenient to be placed into the medullary cavity with the guide. Then the hemostatic liquid is injected into the liquid storage cavity through the second injection port, after the injection is completed, since the sealing element is arranged on the second injection port, the hemostatic liquid in the liquid storage cavity can be prevented from flowing out of the second injection port, then the pressurizing medium is filled into the pressurizing cavity through the first injection port, the first capsule is expanded and dilated outward, in the process, the liquid storage cavity is also inflated outward under the extrusion of the first capsule, so that the second capsule can be attached to the inner side of the medullary cavity, and a physical plugging hemostatic effect is achieved; and in the process that the pressurizing medium is continuously filled into the pressurizing cavity, the internal pressure of the liquid storage cavity becomes larger, and the hemostatic liquid in the liquid storage cavity can overflow into the medullary cavity from the overflow hole, and a pharmacological hemostatic effect is achieved. Therefore, the device for stopping bleeding in the femoral medullary cavity can achieve the physical and pharmacological double hemostatic effects at the same time, and has the advantages of good hemostatic effect, convenient operation and high hemostatic efficiency.

[0007] Further, the guide of the device for stopping bleeding in the femoral medullary cavity is made of soft material and has a strip shape. As a preferred scheme of the present application, the guide of the device for stopping bleeding in the femoral medullary cavity is made of soft material and has a certain rigidity, which provides sufficient support for the first capsule and the second capsule, the soft material is convenient to adapt to the shape of the medullary cavity, and adaptive deformation is generated according to the shape of the medullary cavity, so that the bleeding stopping device enters the preset position in the medullary cavity. And the bleeding stopping device can prevent secondary damage to the medullary cavity when being placed.

[0008] Further, the pressurizing medium of the device for stopping bleeding in the femoral medullary cavity is air or physiological saline. As a preferred scheme of the present application, the pressurizing medium of the device for stopping bleeding in the femoral medullary cavity is used to fill the pressurizing cavity, expand the first capsule, extrude the second capsule, and make the hemostatic liquid overflow from the overflow hole, in the process, the second capsule is attached to the inner surface of the medullary cavity, and the wound in the medullary cavity is pressurized, so as to achieve the double hemostatic effect.

[0009] Further, the hemostatic liquid of the device for stopping bleeding in the femoral medullary cavity is at least fluid gelatin or tranexamic acid. As a preferred scheme of the present application, the hemostatic liquid of the device for stopping bleeding in the femoral medullary cavity is used for stopping bleeding in the medullary cavity during surgery.

[0010] Further, the device for stopping bleeding in the femoral medullary cavity has an overflow hole with a hole diameter in a preset range, and under normal pressure, the liquid is difficult to overflow from the overflow hole.

[0011] Further, the overflow hole is arranged on the outer surface of the second capsule body at a preset density.

[0012] Further, the overflow hole is arranged in the circumferential direction of the second capsule body.

[0013] Further, the sealing member is a one-way valve.

[0014] The technical scheme has the following beneficial effects:

[0015] The hemostatic device for femoral medullary cavity is characterized in that: the proximal end of the hemostatic device is sent forward into the bleeding position in the medullary cavity, the radial size of the guide is smaller than the radial size of the medullary cavity, the second capsule body is soft, the material of the first capsule body is elastic, and the first capsule body is convenient to place into the medullary cavity. Then, the hemostatic liquid is injected into the liquid storage cavity through the second injection port, and after the injection is completed, the sealing member arranged on the second injection port can prevent the hemostatic liquid in the liquid storage cavity from flowing out of the second injection port, and then the pressurizing medium is filled into the pressurizing cavity through the first injection port, so that the first capsule body expands and expands outward, and in this process, the liquid storage cavity is also inflated outward under the extrusion of the first capsule body, so that the second capsule body can be attached to the inner side of the medullary cavity, and the physical plugging hemostatic effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 FIG. 1 is a transverse sectional view of a hemostatic device for femoral medullary cavity in an embodiment of the present application;

[0017] Fig. 2 FIG. 2 is a longitudinal sectional view of a hemostatic device for femoral medullary cavity in an embodiment of the present application.

[0018] In the figure: 10-seal; 3-overflow hole; 4-guide; 6-first capsule; 60-pressurized capsule cavity; 601-first injection port; 7-second capsule; 70-liquid storage capsule cavity; 701-second injection port. DETAILED DESCRIPTION

[0019] According to Figs. 1-2 As shown in the figure, a hemostatic device for femoral medullary cavity includes a guide 4, the guide 4 is coated with a first capsule 6, the first capsule 6 is made of elastic material, a pressurized capsule cavity 60 is arranged between the guide 4 and the first capsule 6; the first capsule 6 is coated with a second capsule 7, the second capsule 7 is made of soft material, a liquid storage capsule cavity 70 is arranged between the first capsule 6 and the second capsule 7; a group of overflow holes 3 are arranged on the second capsule 7 and communicate with the liquid storage capsule cavity 70; the device further includes a first injection port 601 and a second injection port 701, the first injection port 601 and the second injection port 701 respectively communicate with the pressurized capsule cavity 60 and the liquid storage capsule cavity 70; a seal 10 is arranged on the second injection port 701; the second injection port 701 is used for injecting hemostatic liquid into the liquid storage capsule cavity 70, and the seal 10 is used for preventing the hemostatic liquid in the liquid storage capsule cavity 70 from flowing out of the second injection port 701; the first injection port 601 is used for injecting pressurized medium into the pressurized capsule cavity 60, so that the first capsule 6 expands outward to overflow the hemostatic liquid in the liquid storage capsule cavity 70 from the overflow holes 3.

[0020] Based on the above structure, the principle of the device for femoral medullary cavity hemostasis is that the proximal end of the hemostasis device is sent forward into the bleeding position in the medullary cavity, the guide 4 has a radial size smaller than the radial size of the medullary cavity, the second capsule 7 is soft, the material of the first capsule 6 is elastic, and the first capsule 6 is convenient to be placed into the medullary cavity with the guide 4. Then, the hemostatic liquid is injected into the storage liquid capsule cavity 70 through the second injection port 701, after the injection is completed, since the sealing element 10 is arranged on the second injection port 701, the hemostatic liquid in the storage liquid capsule cavity 70 can be prevented from flowing out of the second injection port 701, then the pressurizing medium is filled into the pressurizing capsule cavity 60 through the first injection port 601, the first capsule 6 is expanded and dilated outward, in this process, the storage liquid capsule cavity 70 is extruded by the first capsule 6 and also inflated outward, so that the second capsule 7 can be attached to the inner side of the medullary cavity, and the physical plugging hemostasis effect is achieved; and in the process that the pressurizing medium is continuously filled into the pressurizing capsule cavity 60, the internal pressure of the storage liquid capsule cavity 70 becomes larger, and the hemostatic liquid in the storage liquid capsule cavity 70 can overflow from the overflow hole 3 into the medullary cavity, and the pharmacological hemostasis effect is achieved. Therefore, the device for femoral medullary cavity hemostasis can achieve the physical and pharmacological double hemostasis effects at the same time, and has the advantages of good hemostasis effect, convenient operation and high hemostasis efficiency. The second capsule 7 is in a film shape, the film thickness is 50 μm-500 μm, the first injection port 601 and the second injection port 701 are arranged at the distal end of the hemostasis device, and the materials of the first capsule 6 and the second capsule 7 are silica gel

[0021] In the embodiment, the guide 4 is made of soft material and has a strip shape. The material is polyethylene PE or polypropylene. The guide 4 is made of soft material and has a certain rigidity, which can provide sufficient support for the first capsule 6 and the second capsule 7. The soft material is convenient to adapt to the shape of the medullary cavity, can be deformed according to the shape of the medullary cavity, and can make the hemostasis device enter the preset position in the medullary cavity. Moreover, the hemostasis device can prevent secondary damage to the medullary cavity when being placed.

[0022] In the embodiment, the material of the pressurizing medium is air or physiological saline. The pressurizing medium is used to fill the pressurizing capsule cavity 60, expand the first capsule 6, extrude the second capsule 7, make the hemostatic liquid overflow from the overflow hole 3, attach the second capsule 7 to the inner surface of the medullary cavity, and press the wound in the medullary cavity, so as to achieve the double hemostasis effect.

[0023] In the embodiment, the hemostatic liquid is at least fluid gelatin or tranexamic acid. The hemostatic liquid is used for hemostasis in the medullary cavity during the operation.

[0024] In the embodiment, the diameter of the overflow hole 3 is in a preset range, and the liquid is difficult to overflow from the overflow hole 3 under normal pressure. The diameter of the overflow hole 3 is 6.0 μm-80 μm

[0025] In the embodiment, the overflow holes 3 are arranged on the outer surface of the second capsule 7 at a preset density.

[0026] In the embodiment, the overflow holes 3 are arranged circumferentially around the second capsule 7. The overflow holes 3 are used to prevent the hemostatic material filled in the liquid storage cavity 70 from overflowing through the overflow holes 3 when the pressurized cavity 60 is not pressurized, and to allow the hemostatic material filled in the liquid storage cavity 70 to overflow through the overflow holes 3 when the pressurized cavity 60 is pressurized to squeeze the liquid storage cavity 70.

[0027] In the embodiment, the sealing member 10 is a one-way valve. Conventionally, a cover can be provided on the second injection inlet 701, and the cover is opened when the liquid injection is performed and is closed after the liquid injection is completed. In the present application, the sealing member 10 is a one-way valve, and the liquid can be directly injected into the second injection inlet 701, thereby eliminating the operation of opening and closing the second injection inlet 701.

[0028] The technical principles of the present application are described above in combination with specific embodiments, and these descriptions are only for explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the protection scope of the present application. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these embodiments will all fall within the protection scope of the present application.

Claims

1. A hemostatic device for use in the medullary canal of a femur, characterized by: The device comprises a guide (4) which is coated with a first capsule (6) made of elastic material, and a pressurized capsule cavity (60) is arranged between the guide (4) and the first capsule (6); The first capsule (6) is coated with a second capsule (7) made of soft material, and a liquid storage capsule cavity (70) is arranged between the first capsule (6) and the second capsule (7); a group of overflow holes (3) are arranged on the second capsule (7) and are in communication with the liquid storage capsule cavity (70); The device further comprises a first injection inlet (601) and a second injection inlet (701), which are respectively in communication with the pressurized capsule cavity (60) and the liquid storage capsule cavity (70); a sealing member (10) is arranged on the second injection inlet (701); The second injection inlet (701) is used for injecting hemostatic liquid into the liquid storage capsule cavity (70), the sealing member (10) is used for preventing the hemostatic liquid in the liquid storage capsule cavity (70) from flowing out of the second injection inlet (701), and the first injection inlet (601) is used for injecting a pressurized medium into the pressurized capsule cavity (60) to make the first capsule (6) expand outward to overflow the hemostatic liquid in the liquid storage capsule cavity (70) from the overflow holes (3).

2. A hemostatic device for the medullary cavity of a femur according to claim 1, characterized in that: The guide (4) is made of soft material and has a strip shape.

3. A hemostatic device for the medullary cavity of a femur according to claim 1, characterized in that: The pressurized medium is air or physiological saline.

4. A hemostatic device for the medullary cavity of a femur according to claim 1, characterized in that: The hemostatic liquid is at least fluid gelatin or tranexamic acid.

5. A hemostatic device for the medullary cavity of a femur according to claim 1, characterized in that: The overflow holes (3) have a predetermined size, and under normal pressure, the liquid is difficult to overflow from the overflow holes (3).

6. A hemostatic device for the medullary cavity of a femur according to claim 1, characterized in that: The overflow holes (3) are arranged on the outer surface of the second capsule (7) at a predetermined density.

7. A haemostatic device for use in the medullary cavity of a femur according to claim 6, characterised in that: The overflow holes (3) are arranged in a circumferential direction of the second capsule (7).

8. A hemostatic device for the medullary cavity of a femur according to claim 1, characterized in that: The sealing member (10) is a one-way valve.

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