US-12623051-B2 - Drainage device

US12623051B2US 12623051 B2US12623051 B2US 12623051B2US-12623051-B2

Abstract

A drainage device having a catheter and a control valve, the control valve having a valve body and a resilient switch controlling the valve body, the valve body being connected to the catheter, the resilient switch being provided in the catheter, and characterized in that: the user can deform the resilient switch to adjust the opening of the valve body by pressing the catheter or pressing a body part having a cavity accommodating the catheter, and can further compel the resilient switch into a recovery-blocked status; and the user can release the recovery-blocked status by bending or shaking the catheter or bending or shaking the body part accommodating the catheter.

Inventors

Chung-Yung HO
Chung-Chen HO
Hong-Fa Ho

Assignees

Chung-Yung HO
Chung-Chen HO
Hong-Fa Ho

Dates

Publication Date: 20260512
Application Date: 20231101
Priority Date: 20230807

Claims (10)

1 . A drainage device including a catheter and a control valve connected with the catheter, characterized in that: the control valve has a valve body and a resilient switch, the valve body having a passageway controlled by the resilient switch to be in a normally closed status, a normally open status, or a variable open status adjusted by a pressing force acting on the resilient switch; and the resilient switch includes an elastic structure, a driving part, a recovery-blocking part and an unlocking handle, wherein the driving part is movable by a deformation response of the elastic structure to have a displacement to alter an opening of the passageway of the valve body; the recovery-blocking part is used for providing a recovery-blocking effect on the driving part; and the unlocking handle is used for an external force to apply a moment of force on the driving part to release the recovery-blocking effect; wherein when the elastic structure is not pressed, the passageway is in a first normal status; when the elastic structure is under a press operation, the opening of the passageway is determined according to a relative relationship between the displacement and a displacement threshold, where, when the displacement is not larger than the displacement threshold, the passageway is in the variable open status, and the opening thereof is smaller than the opening of the normally open status, and when the displacement is larger than the displacement threshold, the driving part will be under the recovery-blocking effect provided by the recovery-blocking part to make the passageway situated in a second normal status, wherein when the first normal status is the normally closed status, the second normal status is the normally open status, and when the first normal status is the normally open status, the second normal status is the normally closed status; and wherein after the passageway is in the second normal status, the unlocking handle can be used to release the recovery-blocking effect of the recovery-blocking part by applying the moment of force, thereby restoring the passageway to the first normal status.
2 . The drainage device as disclosed in claim 1 , wherein the moment of force is generated by a bending operation or shaking operation acting on the catheter.
3 . The drainage device as disclosed in claim 1 , wherein the catheter is to be placed into a cavity to provide a flow controllable draining function.
4 . The drainage device as disclosed in claim 3 , wherein the catheter has a fixation structure for fixing the catheter in the cavity.
5 . The drainage device as disclosed in claim 4 , wherein the fixation structure includes at least one channel formed in a shell of the catheter and a balloon connected with the at least one channel, where the catheter is fixed in the cavity by introducing a volume of a fluid into the balloon via the at least one channel to inflate the balloon.
6 . The drainage device as disclosed in claim 5 , wherein the fluid is a gas or a liquid.
7 . The drainage device as disclosed in claim 1 , wherein the catheter has an engagement structure disposed on an inner surface of the shell for fixing the elastic structure.
8 . The drainage device as disclosed in claim 1 , wherein the valve body is selected from a group consisting of a duckbill valve, a gate valve, a butterfly valve, a ball valve, a plunger valve, a plug valve and a diaphragm valve.
9 . The drainage device as disclosed in claim 3 , wherein the flow controllable draining function is for draining a body fluid in the cavity.
10 . The drainage device as disclosed in claim 9 , wherein the body fluid is urine.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a drainage device, in particular to a medical drainage device. Description of the Related Art There are different types of drainage devices. In the type of drainage device having a control valve, the passageway thereof can be controlled by the control valve to be normally closed, normally open, or in a variable open status adjusted by a pressing force acting on the control valve. Drainage devices can be used before, during and after a surgery in hospital, or for self-catheterization in daily life. There are a variety of drainage devices: for example, intravenous drip line, pigtail catheters or chest tube for thoracentesis drainage, wound draining tube for draining blood, water, secretions, or fluid accumulated in a cavity, urinary catheter for males having urinary difficulty with or without benign prostatic hyperplasia (BPH), urinary incontinence, urinary retention, or repeated urinary tract infections. Besides, there are also indwelling urinary catheter and intermittent urinary catheter used as a replacement means or temporary means for the treatment of BPH. In some cases, the urinary catheter needs to be drainage controllable for patients with urinary retention, patients with compromised urinary sphincter function due to implantation of a prosthetic stent, bladder neck stent or catheter, or being under anesthesia, or patients with urinary incontinence. However, for the urinary catheter to be fully retained in the body, conventional urinary catheters still lack a convenient way for adjusting the drainage path thereof. In addition, as the valve used in most conventional controllable drainage devices is generally composed of many parts and complex in structure, the manufacturing cost thereof is inherently high and there remains room for improvement. To solve the problems mentioned above, a novel drainage device is needed in the field. SUMMARY OF THE INVENTION The main objective of the invention is to propose a drainage device having a catheter, which, by installing a resilient switch in the catheter, a user can deform the resilient switch to adjust the opening of a valve connected with the catheter by pressing the catheter or pressing a body part having a cavity accommodating the catheter, and can further compel the resilient switch into a recovery-blocked status; and the user can release the recovery-blocked status by bending or shaking the catheter, or bending or shaking the body part accommodating the catheter. That is, the drainage device of the invention not only allows a user to manually press a resilient switch hidden in a catheter to adjust the opening of the valve, but also allows the user to perform a bending or shaking operation to release the resilient switch hidden in the catheter from a recovery-blocked status to make the resilient switch resiliently restored to an initial state. To attain the foregoing objective, a drainage device is proposed, which includes a catheter and a control valve connected with the catheter, characterized in that: the control valve has a valve body and a resilient switch, the valve body having a passageway controlled by the resilient switch to be in a normally closed status, a normally open status, or a variable open status adjusted by a pressing force acting on the resilient switch; andthe resilient switch includes an elastic structure, a driving part, a recovery-blocking part and an unlocking handle, where the driving part is movable by a deformation response of the elastic structure to have a displacement to alter an opening of the passageway of the valve body; the recovery-blocking part is used for providing a recovery-blocking effect on the driving part; and the unlocking handle is used for an external force to apply a moment of force on the driving part to release the recovery-blocking effect;where, when the elastic structure is not pressed, the passageway is in a first normal status; when the elastic structure is under a press operation, the opening of the passageway is determined according to a relative relationship between the displacement and a displacement threshold, where, when the displacement is not larger than the displacement threshold, the passageway is in the variable open status, and the opening thereof is smaller than the opening of the normally open status, and when the displacement is larger than the displacement threshold, the driving part will be under the recovery-blocking effect provided by the recovery-blocking part to make the passageway situated in a second normal status, where, when the first normal status is the normally closed status, the second normal status is the normally open status, and when the first normal status is the normally open status, the second normal status is the normally closed status; andafter the passageway is in the second normal status, the unlocking handle can be used to release the recovery-blocking effect of the recovery-blocking