Endoarterial injury balloon device

Abstract

An endarterium injury balloon device relates to medical instruments and comprises an injector (1), a catheter (2) and an air bag (3) arranged at the front end of the catheter (2), a push rod (5) is arranged on a push rod (4) of the injector (1), one end of the push rod (5) is fixedly connected to the rear end of the push rod (4), the other end of the push rod (5) faces the front end of a needle cylinder (6), the needle cylinder (6) of the injector (1) is sleeved with a limiting ring (7), one end of the limiting ring (7) is used for limiting the push rod (5), and the other end of the limiting ring (7) is used for limiting the air bag (3). A quick locking pressing handle (8) is hinged to the limiting ring (7), one side of the quick locking pressing handle (8) is provided with an arc-shaped pressure applying face (9) matched with the surface of the needle cylinder (6), the arc-shaped pressure applying face (9) is arranged around a hinge shaft in an involute shape, and the arc-shaped pressure applying face (9) can be pressed on the surface of the needle cylinder (6) by applying pressure to the quick locking pressing handle (8). The device has the advantages of simple structure, reasonable design, convenience in use and accuracy in pressure control.

Description

Technical Field

[0001] This utility model relates to medical devices, specifically to a balloon device for conducting experiments on arterial intimal injury. Background Technology

[0002] As medical researchers delve deeper into cardiovascular and cerebrovascular diseases, the application of animal models of arterial intimal injury is becoming increasingly widespread. Among these, the experimental method of repeatedly applying pressure to the arterial intimal with balloon inflation to create damage is quite common. However, simply using a syringe combined with a rubber balloon to achieve the experimental purpose relies heavily on the operator's feel to control the injection pressure, making it difficult to accurately control the force of each injection, resulting in varying degrees of damage to the arterial intimal in each experiment. To address this issue, utility model patent CN202161431U discloses a technical solution for an "arterial intimal injury balloon device." This solution uses a pressure gauge to attempt to accurately control the pressure applied each time. However, in practice, the force applied to the balloon still depends on the operator's feel; the pressure gauge only plays an auxiliary role. Without a good feel, ordinary operators still cannot accurately control the pressure applied each time. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide an arterial intima injury balloon device that can precisely control the amount of injection pressure for each injection.

[0004] The technical solution of this utility model is: an arterial intima injury balloon device, including a syringe, a catheter, and a balloon disposed at the front end of the catheter. The syringe plunger is provided with a push rod, which is parallel to the syringe barrel and close to the surface of the syringe barrel. One end of the push rod is fixedly connected to the rear end of the plunger, and the other end faces the front end of the syringe barrel. A limiting ring is fitted on the syringe barrel of the syringe. One end of the limiting ring is used to limit the push rod. A quick-locking handle is hinged to the limiting ring. One side of the quick-locking handle is provided with an arc-shaped pressure surface that cooperates with the surface of the syringe barrel. The arc-shaped pressure surface is arranged in an involute shape around the hinge axis. Applying pressure to the quick-locking handle can press the arc-shaped pressure surface tightly against the surface of the syringe barrel.

[0005] The technical advantages of this invention are: simple structure, reasonable design, convenient use, and accurate pressure control. In use, the limiting ring is set in an appropriate position, and the quick-locking handle on the slip ring is pinched with fingers to quickly fix the limiting ring, causing the push rod to stop accurately at the set position, thus allowing precise control of the injection pressure for each injection. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0007] Figure 2 This is a top view of the syringe portion of this utility model.

[0008] Figure 3 This is a cross-sectional structural diagram of the limiting ring of this utility model;

[0009] Figure 4 This is a cross-sectional structural diagram of the quick-locking pressure handle of this utility model. Detailed Implementation

[0010] like Figures 1 to 4 As shown, an arterial intimal injury balloon device includes a syringe 1, a catheter 2, and a balloon 3 located at the front end of the catheter 2. The syringe 1 has a push rod 4 with a push rod 5, which is parallel to and close to the surface of the syringe barrel 6. One end of the push rod 5 is fixedly connected to the rear end of the push rod 4, and the other end faces the front end of the syringe barrel 6. A limiting ring 7 is fitted onto the syringe barrel 6 of the syringe 1. One end of the limiting ring 7 is used to limit the push rod 5. A quick-locking handle 8 is hinged to the limiting ring 7. One side of the quick-locking handle 8 has an arc-shaped pressure surface 9 that mates with the surface of the syringe barrel 6. The arc-shaped pressure surface 9 is arranged in an involute shape around the hinge axis. Applying pressure to the quick-locking handle 8 can press the arc-shaped pressure surface 9 tightly against the surface of the syringe barrel 6. In use, squeezing the quick-locking handle with your fingers will lock the limiting ring onto the surface of the syringe barrel. Pushing the push rod forward will stop the free end of the push rod after it reaches the limiting ring.

[0011] The limiting ring 7 has a slot 10, and the quick-locking handle 8 is hinged in the slot 10.

[0012] The inner side of the limiting ring 7 is provided with an annular groove and a rubber ring 11 is embedded therein. The rubber ring 11 is in contact with the surface of the syringe barrel 6 of the syringe 1. This prevents the limiting ring from sliding freely on the syringe barrel and facilitates positioning.

[0013] There are two quick-locking handles 8, symmetrically arranged on the limiting ring 7. This allows for easy operation by pinching with two fingers.

[0014] The arc-shaped pressure surface 9 of the quick-locking handle 8 is provided with a friction part 12. The friction part can be made of a rubber material with a high coefficient of friction.

[0015] The syringe 1 is a veterinary stainless steel syringe. The structure of this syringe makes it easier to apply force.

[0016] The syringe 1 has a scale line 13 on its syringe barrel 6 surface. The scale line is engraved on the metal surface and can play an auxiliary role in determining the position. Alternatively, during manufacturing, a pressure reference value can be marked next to the scale line by testing with a pressure gauge.

Claims

1. An arterial intimal injury balloon device, comprising a syringe (1), a catheter (2), and a balloon (3) disposed at the tip of the catheter (2), characterized in that, The syringe (1) has a push rod (4) with a push rod (5) that is parallel to the syringe (6) and close to the surface of the syringe (6). One end of the push rod (5) is fixedly connected to the rear end of the push rod (4), and the other end faces the front end of the syringe (6). A limit ring (7) is fitted on the syringe (6) of the syringe (1). One end of the limit ring (7) is used to limit the push rod (5). A quick-locking handle (8) is hinged on the limit ring (7). One side of the quick-locking handle (8) is provided with an arc-shaped pressure surface (9) that cooperates with the surface of the syringe (6). The arc-shaped pressure surface (9) is arranged in an involute shape around the hinge axis. Applying pressure to the quick-locking handle (8) can press the arc-shaped pressure surface (9) onto the surface of the syringe (6).

2. The arterial intimal injury balloon device as described in claim 1, characterized in that, The limiting ring (7) has a slot (10), and the quick-locking handle (8) is hinged in the slot (10).

3. The arterial intimal injury balloon device as described in claim 1 or 2, characterized in that, The inner side of the limiting ring (7) is provided with an annular groove and a rubber ring (11) is embedded therein. The rubber ring (11) is in contact with the surface of the syringe barrel (6) of the syringe (1).

4. The arterial intimal injury balloon device as described in claim 1, characterized in that, There are two quick-locking handles (8), which are symmetrically arranged on the limiting ring (7).

5. The arterial intimal injury balloon device as described in claim 1, 2, or 4, characterized in that, The arc-shaped pressure surface (9) of the quick-locking handle (8) is provided with a friction part (12).

6. The arterial intimal injury balloon device as described in claim 1, characterized in that, The syringe (1) is a veterinary stainless steel metal syringe.

7. The arterial intimal injury balloon device as described in claim 6, characterized in that, The syringe (1) has a scale line (13) on the surface of the syringe barrel (6).

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