Constant-pressure negative-pressure ball for drainage bottle

Abstract

The invention discloses a constant-pressure negative-pressure ball for a drainage bottle, which comprises a ball body, a one-way air inlet valve connected to the ball body, a catheter connected to the end part of the air inlet valve and a one-way air outlet valve connected to the bottom of the ball body, and the constant-pressure negative-pressure ball automatically recovers to generate negative pressure under the action of self after being pinched and pressed, which is the prior art. The air inlet valve can be used for one-way air intake, so that the hard drainage bottle is exhausted, negative pressure is generated, and the air outlet valve is used for exhausting air when the ball body is pinched and pressed. The inner end of the air inlet valve is connected with a supporting pipe, a vertical strip-shaped outer hole is formed in the supporting pipe, the telescopic mechanism is installed in the supporting pipe, the traction mechanism is arranged on the telescopic mechanism and the inner cavity wall of the ball body, and when the ball body is pinched and pressed, the traction mechanism can drive the telescopic mechanism to move upwards, so that the air inlet area of the outer hole is reduced; and pressure balance is carried out. After the ball body is pinched and pressed, the ball body deforms inwards, the traction mechanism returns along with returning of the telescopic mechanism, the telescopic mechanism moves upwards, the outer hole is shielded, and the air inlet area is reduced.

Description

Technical Field

[0001] The invention relates to the field of negative pressure ball pressure balance, in particular to a constant pressure negative pressure ball for a drainage bottle. Background Art

[0002] Negative pressure drainage can draw out the accumulated fluid in the body and discharge it out of the body. Currently, there are drainage bags and drainage bottles. The drainage bag takes up little space, but because its shape changes with the amount of accumulated fluid, the liquid cannot correspond to the scale, resulting in inaccurate measurement. The drainage bottle is different. It is made of hard material, and the scale line corresponds to the amount of liquid. In order to ensure negative pressure, a negative pressure ball is connected. After the negative pressure ball is squeezed, the gas in the ball is discharged. In the process of restoring the deformation, negative pressure is generated, so that the drainage bottle forms a negative pressure state for drainage. The current problem is that after the negative pressure ball is squeezed and released, the negative pressure reaches the maximum, and then gradually decreases. The negative pressure generated also tends to gradually decrease. It is relatively large at the beginning, and relatively small in the middle and the end. The negative pressure is uneven, especially for children, who are relatively immature and easy to cause damage. It is not easy to be too large. Therefore, how to balance the pressure of the negative pressure ball and make it stable is a problem that technicians in this field urgently need to solve. Summary of the invention

[0003] The object of the present invention is to provide a constant pressure negative pressure ball for a drainage bottle to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a constant pressure negative pressure ball for a drainage bottle, comprising a sphere, a one-way air inlet valve connected to the sphere, a conduit connected to the end of the air inlet valve, and a one-way air outlet valve connected to the bottom of the sphere. The sphere is made of a transparent material and is elastic. After being squeezed, it automatically recovers and generates negative pressure under its own action. This is the prior art. The air inlet valve can take in air in one direction, thereby pumping air into the hard drainage bottle to generate negative pressure, and the air outlet valve actually exhausts air when the sphere is squeezed. The inner end of the air inlet valve is connected to a support tube, and a vertical strip-shaped outer hole is opened on the support tube. It also includes a telescopic mechanism installed in the support tube and a pulling mechanism arranged on the telescopic mechanism and the inner cavity wall of the sphere. When the sphere is squeezed, the pulling mechanism can drive the telescopic mechanism to move upward, reducing the air intake area of ​​the outer hole to balance the pressure. After the sphere is squeezed, it deforms inward, and the pulling mechanism returns as the telescopic mechanism returns. The telescopic mechanism moves upward to block the outer hole, and the air intake area is reduced. This balances the problem of relatively high initial pressure and tends to a stable value.

[0005] Preferably, the telescopic mechanism comprises a telescopic tube inserted into the support tube and having a closed lower end, and the telescopic tube is provided with an inner hole corresponding to the outer hole, the pulling mechanism is connected to the lower end of the telescopic tube, and also comprises an elastic return mechanism arranged between the lower end of the telescopic tube and the support tube. The return mechanism has an upward elastic force and can push the telescopic tube upward, and when the ball is in the initial state, the return mechanism is compressed.

[0006] Preferably, the return mechanism includes a protrusion fixed on the circumference of the inner wall of the support tube, and the protrusion is connected to the lower end of the telescopic tube by a spring. When the sphere is in the initial state, the spring is compressed and the inner hole is facing the outer hole. After the sphere is squeezed, the pulling mechanism contracts into the support tube. Under the action of the spring, the telescopic tube is pushed upward, the inner hole and the outer hole are staggered, and the air intake area is reduced. This can balance the problem of high initial pressure and reduce the pressure after squeezing by reducing the air intake.

[0007] Preferably, the cross section of the support tube is elliptical, and the telescopic tube corresponds to the shape of the support tube. The spring can limit the rotation of the telescopic tube in the support tube to ensure that the inner hole corresponds to the outer hole.

[0008] Preferably, the pulling mechanism includes a pull rope connected to the lower end of the telescopic tube, and the lower end of the pull rope extends downward from the support tube and is installed in the middle of the left wall of the inner cavity of the sphere, and the extended part of the pull rope can be horizontal.

[0009] Preferably, the pull ropes are provided in two parts, on the left and right, which are respectively installed on the left and right walls of the inner cavity of the sphere, so that the forces on both sides are balanced, and thus the forces on both sides of the support tube are also balanced.

[0010] Preferably, it also includes a supporting mechanism for increasing the supporting area of ​​the ball for the pull rope. The fixed point of the pull rope has a small force-bearing area, and the force is easily unbalanced during recovery. The supporting mechanism can disperse the force.

[0011] Preferably, the supporting mechanism comprises elastic arc-shaped plastic sheets installed on the left and right walls of the inner cavity of the sphere, the two plastic sheets have openings facing each other and leave a movable gap for pinching and pressing, and the plastic sheets are elastic so that they can be deformed when pinched and the pull rope can be pulled when recovering, thereby ensuring that the sphere will not be concave at any point and the force is balanced.

[0012] Preferably, a pinching mark is provided on the outer side of the sphere at a position corresponding to the plastic sheet, so that the user knows where to pinch the plastic sheet.

[0013] Preferably, the front and rear sides of the sphere are both provided with arc-shaped hard anti-pinch plates, and the anti-pinch plates are arranged in strips up and down along the outer wall of the sphere, and the upper and lower ends of the two anti-pinch plates are fixed together respectively, which can avoid accidental pinching between the two plastic sheets and ensure that the plastic sheets can be pinched.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. After the ball is squeezed, the gas is discharged and negative pressure is generated. After squeezing, the pull rope is pulled by the telescopic tube under the action of the spring and retracted into the support tube. The telescopic tube is pushed upward by the spring, and the inner hole and the outer hole are staggered, and the air intake area is reduced. In this way, although the initial negative pressure is large, the air intake area is reduced, thereby reducing the pressure, avoiding excessive pressure and tending to a stable value. As the ball gradually recovers, the pressure decreases, and the pull rope also pulls the telescopic tube, the area facing the inner hole and the outer hole increases, the air intake area increases, and the pressure will also increase, thus tending to a stable value. In this way, the pressure during deformation is relatively stable, which is more conducive to the health of patients; 2. The plastic sheet increases the support area and can be deformed, which improves the recovery effect of the ball and balances the elastic force of the spring, making the recovery state closer to the normal recovery state of the existing negative pressure ball; 3. The setting of anti-pinch plate makes it easy to apply force accurately from both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the first embodiment of the present invention; Figure 2 is an isometric view of a first embodiment of the present invention; Figure 3 An exploded view of a first embodiment of the present invention; Figure 4 It is an isometric view of the first embodiment of the present invention connected to a drainage bottle; Figure 5 It is a front view of a second embodiment of the present invention; Figure 6 It is an isometric view of the second embodiment of the present invention.

[0016] In the figure: 1. sphere; 2. air inlet valve; 3. air outlet valve; 4. support tube; 5. outer hole; 6. telescopic tube; 7. inner hole; 8. protrusion; 9. spring; 10. pull rope; 11. plastic sheet; 12. pinch mark; 13. anti-pinch plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1 See also Figures 1 to 4The present invention provides a technical solution for a constant pressure negative pressure ball for a drainage bottle: a constant pressure negative pressure ball for a drainage bottle, comprising a sphere 1, a one-way air inlet valve 2 connected to the sphere 1, a catheter connected to the end of the air inlet valve 2, and a one-way air outlet valve 3 connected to the bottom of the sphere 1. The sphere 1 is made of a transparent material and has elasticity. After being squeezed, it automatically recovers and generates negative pressure under its own action. This is the prior art. The air inlet valve 2 can take in air in one direction, thereby pumping air into the hard drainage bottle to generate negative pressure. The air outlet valve 3 actually exhausts air when the sphere 1 is squeezed. The inner end of the air inlet valve 2 is connected to a support tube 4, and a vertical strip-shaped outer hole 5 is opened on the support tube 4. It also includes a telescopic mechanism installed in the support tube 4 and a pulling mechanism arranged on the telescopic mechanism and the inner cavity wall of the sphere 1. When the sphere 1 is squeezed, the pulling mechanism can drive the telescopic mechanism to move upward, reducing the air intake area of ​​the outer hole 5 to balance the pressure. After the ball 1 is squeezed, it deforms inwards, and the pulling mechanism returns to its original position. As the telescopic mechanism returns to its original position, the telescopic mechanism moves upwards to block the outer hole 5, and the air intake area is reduced, thus balancing the problem of relatively large initial pressure and tending to a stable value.

[0019] The telescopic mechanism includes a telescopic tube 6 which is inserted into the support tube 4 and has a closed lower end. The telescopic tube 6 is provided with an inner hole 7 corresponding to the outer hole 5. The cross section of the support tube 4 is elliptical, and the telescopic tube 6 corresponds to the shape of the support tube 4. The spring 9 can limit the rotation of the telescopic tube 6 in the support tube 4 to ensure that the inner hole 7 corresponds to the outer hole 5. The pulling mechanism is connected to the lower end of the telescopic tube 6, and also includes an elastic return mechanism arranged between the lower end of the telescopic tube 6 and the support tube 4. The return mechanism has an upward elastic force and can push the telescopic tube 6 upward. When the ball 1 is in the initial state, the return mechanism is compressed. The return mechanism includes a protrusion 8 fixed on the circumference of the inner wall of the support tube 4, and the protrusion 8 is connected to the lower end of the telescopic tube 6 by a spring 9. When the sphere 1 is in the initial state, the spring 9 is compressed, and the inner hole 7 is facing the outer hole 5. After the sphere 1 is squeezed, the pulling mechanism contracts like the inside of the support tube 4. Under the action of the spring 9, the telescopic tube 6 is pushed upward, the inner hole 7 is staggered with the outer hole 5, and the air intake area is reduced. This can balance the problem of high initial pressure and reduce the pressure after squeezing by reducing the air intake.

[0020] The pulling mechanism includes a pull rope 10 connected to the lower end of the telescopic tube 6, and the lower end of the pull rope 10 extends downward from the support tube 4 and is installed in the middle of the left wall of the inner cavity of the sphere 1. The extended part of the pull rope 10 can be horizontal. The pull rope 10 is provided with two left and right ones, which are respectively installed on the left and right walls of the inner cavity of the sphere 1. The forces on both sides are balanced, so that the forces on both sides of the support tube 4 are also balanced.

[0021] The support mechanism also includes a support mechanism that increases the support area of ​​the ball 1 for the pull rope 10. The fixed point of the pull rope 10 has a small force area, and the force is easily unbalanced when recovering. The support mechanism can disperse the force. The support mechanism includes an elastic arc-shaped plastic sheet 11 installed on the left and right walls of the inner cavity of the ball 1. The two plastic sheets 11 are opened opposite to each other and have a movable gap for pinching and pressing. The plastic sheet 11 is elastic, so it can be deformed when pinched and pressed. When recovering, it can also pull the pull rope 10, ensuring that the ball 1 will not be dented at a certain point and the force is balanced.

[0022] A pinching mark 12 is provided on the outer side of the sphere 1 at a position corresponding to the plastic sheet 11 so that the user knows where to pinch the plastic sheet 11 .

[0023] Example 2 like Figures 5 to 6 Compared with Example 1, different from the pinching mark 12, the front and rear sides of the sphere 1 are provided with arc-shaped hard anti-pinch plates 13, and the anti-pinch plates 13 are in the shape of strips arranged up and down along the outer wall of the sphere 1. The upper and lower ends of the two anti-pinch plates 13 are fixed together respectively, which can avoid accidental pinching between the two plastic sheets 11 and ensure that the plastic sheet 11 can be pinched.

[0024] Working principle: After the ball 1 is squeezed, the gas is discharged and negative pressure is generated. After squeezing, the pull rope 10 is pulled by the telescopic tube 6 under the action of the spring 9 and retracted into the support tube 4. The telescopic tube 6 is pushed upward by the spring 9, and the inner hole 7 and the outer hole 5 are staggered, and the air intake area is reduced. In this way, although the initial negative pressure is large, the air intake area is reduced, thereby reducing the pressure, avoiding excessive pressure and tending to a stable value. As the ball 1 gradually recovers, the pressure decreases, and the pull rope 10 also pulls the telescopic tube 6, the area facing the inner hole 7 and the outer hole 5 increases, the air intake area increases, and the pressure will also increase, thus tending to a stable value. In this way, the pressure during deformation is relatively stable, which is more conducive to the health of patients. The plastic sheet 11 increases the supporting area and can be deformed, thereby improving the recovery effect of the ball 1 and balancing the elastic force of the spring 9, so that the recovery state is closer to the normal recovery state of the existing negative pressure ball; The provision of the anti-pinch plate 13 facilitates precise force application from both sides.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant pressure negative pressure ball for a drainage bottle, comprising a ball (1), a one-way air inlet valve (2) connected to the ball (1), a conduit connected to the end of the air inlet valve (2), and a one-way air outlet valve (3) connected to the bottom of the ball (1), characterized in that: The inner end of the air intake valve (2) is connected to a support tube (4), and a vertical strip-shaped outer hole (5) is formed on the support tube (4). The air intake valve (2) further comprises a telescopic mechanism installed in the support tube (4) and a pulling mechanism arranged on the telescopic mechanism and the inner cavity wall of the sphere (1). When the sphere (1) is squeezed, the pulling mechanism can drive the telescopic mechanism to move upward, thereby reducing the air intake area of ​​the outer hole (5) to achieve pressure balance.

2. The constant pressure negative pressure ball for drainage bottle according to claim 1, characterized in that: The telescopic mechanism comprises a telescopic tube (6) inserted into the support tube (4) and having a closed lower end, and the telescopic tube (6) is provided with an inner hole (7) corresponding to the outer hole (5). The pulling mechanism is connected to the lower end of the telescopic tube (6) and also comprises an elastic return mechanism arranged between the lower end of the telescopic tube (6) and the support tube (4).

3. The constant pressure negative pressure ball for drainage bottle according to claim 2, characterized in that: The return mechanism comprises a protrusion (8) fixed on the circumferential direction of the inner wall of the support tube (4), and the protrusion (8) is connected to the lower end of the telescopic tube (6) via a spring (9).

4. The constant pressure negative pressure ball for drainage bottle according to claim 3, characterized in that: The cross section of the support tube (4) is elliptical, and the telescopic tube (6) corresponds to the shape of the support tube (4).

5. The constant pressure negative pressure ball for drainage bottle according to claim 3, characterized in that: The pulling mechanism comprises a pull rope (10) connected to the lower end of the telescopic tube (6), and the lower end of the pull rope (10) extends downward from the support tube (4) and is then mounted in the middle of the left wall of the inner cavity of the sphere (1).

6. The constant pressure negative pressure ball for drainage bottle according to claim 5, characterized in that: The pull ropes (10) are provided in two parts, namely, left and right parts, which are respectively mounted on the left wall and right wall of the inner cavity of the sphere (1).

7. The constant pressure negative pressure ball for drainage bottle according to claim 6, characterized in that: It also includes a support mechanism for increasing the support area of ​​the ball (1) for the pull rope (10).

8. The constant pressure negative pressure ball for drainage bottle according to claim 7, characterized in that: The support mechanism comprises elastic arc-shaped plastic sheets (11) mounted on the left and right walls of the inner cavity of the spherical body (1), the two plastic sheets (11) are opened facing each other and have a movable gap for pinching.

9. The constant pressure negative pressure ball for drainage bottle according to claim 8, characterized in that: A pinch mark (12) is provided on the outer side of the sphere (1) at a position corresponding to the plastic sheet (11).

10. The constant pressure negative pressure ball for drainage bottle according to claim 8, characterized in that: The front and rear sides of the sphere (1) are both provided with arc-shaped hard anti-pinch plates (13), and the anti-pinch plates (13) are arranged in strips up and down along the outer wall of the sphere (1), and the upper and lower ends of the two anti-pinch plates (13) are respectively fixed together.

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