An adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt

Abstract

The invention discloses an adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt, comprising an outer sleeve and an inner sleeve, wherein the outer sleeve is designed to be cylindrical, and the side wall of the cylindrical is provided with an outer sleeve slideway I and an outer sleeve slideway II, and the centers of the outer sleeve slideway I and the outer sleeve slideway II are located on the same straight line; the inner sleeve comprises an inner sleeve vertebral body and an inner sleeve body, the inner sleeve vertebral body is fixedly connected to one end of the inner sleeve body, and the other end of the inner sleeve body is embedded in the inner hole of the outer sleeve, and the side wall of the inner sleeve body is provided with an inner sleeve slideway. The invention is ingenious in conception, simple in operation, does not require abdominal opening surgery, realizes the same level through minimally invasive, quickly positions and places the adjustable shunt valve, shortens the operation time, reduces patient damage, reduces postoperative complications, reduces patient medical expenses, and improves the patient's quality of life.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt. Background Art

[0002] Hydrocephalus is a brain disease caused by cerebrospinal fluid flow obstruction, excessive cerebrospinal fluid production or reduced absorption. Most patients require surgical treatment to relieve hydrocephalus and relieve symptoms of brain tissue compression. At present, the most commonly used surgical methods for treating hydrocephalus by domestic clinicians are ventriculoperitoneal shunt and ventriculoatrial shunt. With the rapid development of minimally invasive technology, the emergence of lumbar peritoneal shunt with adjustable pressure shunt tube has provided a new option for the clinical treatment of hydrocephalus. It can shunt the patient's lumbar subarachnoid cerebrospinal fluid into the abdominal cavity, promote the disappearance of hydrocephalus, and is more in line with the circulation status of cerebrospinal fluid. Lumbar peritoneal shunt with adjustable pressure shunt is a minimally invasive surgical procedure with the advantages of short operation time, less trauma and simple operation. Its lumbar puncture can avoid the shortcomings of ventricular puncture in ventriculoperitoneal shunt with adjustable pressure shunt and reduce surgical risks. Puncture and placement of shunt are performed with a full understanding of the puncture site and the scope of the surgical area, which will not only not damage the patient's brain tissue, but also help to improve the shunt effect and reduce the incidence of related complications. The adjustable shunt valve controls the drainage volume of the shunt. Lumbar puncture can prevent large fluctuations in intracranial pressure caused by excessive drainage of cerebrospinal fluid, self-adjust pressure, reduce pressure on brain tissue, avoid bridging vein traction and rupture bleeding, and prevent subdural hemorrhage. In addition, the shunt head of this procedure is not wrapped by the choroid plexus, which can prevent the occurrence of shunt blockage, promote shunt and improve prognosis. However, at present, the placement of an adjustable shunt valve and shunt tube in the abdominal cavity in China uses a shallow abdominal incision, peeling off the subcutaneous layer of the abdomen, placing the adjustable shunt valve in the subcutaneous layer, and placing the shunt tube in the abdominal cavity through an abdominal puncture hole. This surgical procedure requires anesthesia of the patient, and it is very easy to damage the abdominal contents and peritoneum during the operation. The traction of the hemostatic forceps also causes great pain to the patient. Postoperative sutures are prone to incision infection, leaving suture scars on the abdomen, and other symptoms that affect the patient's quality of life. At the same time, the adjustable shunt valve is very easy to flip under the skin or it is difficult to achieve the same level as the drainage tube in the subarachnoid space, which increases the difficulty of the operation and prolongs the operation time. Summary of the invention

[0003] The purpose of the present invention is to provide an adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt surgery, so as to solve the problems of the prior art that the surgical operation is difficult and time-consuming, and the abdominal incision brings new injuries and pain to the patient.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention discloses an adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt, comprising an outer sleeve and an inner sleeve, wherein the outer sleeve is designed to be cylindrical, and an outer sleeve slideway I and an outer sleeve slideway II are arranged on the side wall of the cylindrical tube, and the centers of the outer sleeve slideway I and the outer sleeve slideway II are located on the same straight line; the inner sleeve comprises an inner sleeve vertebral body and an inner sleeve body, the inner sleeve vertebral body is fixedly connected to one end of the inner sleeve body, and the other end of the inner sleeve body is embedded in the inner hole of the outer sleeve, and the inner sleeve slideway is arranged on the side wall of the inner sleeve body.

[0006] Furthermore, the outer sleeve slideway I and the outer sleeve slideway II have different widths, the width of the outer sleeve slideway I is greater than the width of the outer sleeve slideway II, and the outer sleeve slideway I and the outer sleeve slideway II are connected to penetrate the entire side wall of the outer sleeve.

[0007] Furthermore, the outer diameter of the inner sleeve body matches the inner diameter of the outer sleeve 1 .

[0008] Furthermore, the inner sleeve slideway is a non-open slideway, and the inner sleeve slideway is arranged at an end away from the inner sleeve vertebral body.

[0009] Furthermore, the open length of the inner sleeve slideway is 1 / 2-3 / 5 of the length of the inner sleeve body.

[0010] Furthermore, the outer sleeve and the inner sleeve are both made of stainless steel.

[0011] Furthermore, scale lines are arranged on the outer wall of the outer sleeve, the exposed end of the outer sleeve is arranged as a knurled handle, and anti-slip patterns are arranged on the side wall of the knurled handle.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are:

[0013] The present invention discloses an adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt, including an inner cannula and an outer cannula for use in combination. When used, abdominal surgical opening can be avoided, and two points of the abdomen are minimally invasive. A subcutaneous tunnel at the same level is formed through a positioning device developed by the company, and the adjustable shunt valve is smoothly buried in the subcutaneous part of the abdomen through the slide on the positioning device. At the same time, the multiple slides on the positioning device can prevent it from turning over. The drainage tubes on both sides are externally connected and buried in the subcutaneous part through the slide on the positioning device. The present invention is ingenious in conception, simple in operation, does not require abdominal opening surgery, and realizes the same level through minimally invasive, rapid positioning and placement of the adjustable shunt valve, shortening the operation time, reducing patient damage, reducing postoperative complications, reducing patient medical expenses, and improving the patient's quality of life. The present invention can be applied to cerebrospinal fluid peritoneal shunt in brain surgery, and is suitable for hydrocephalus, cerebrospinal fluid leakage, dura mater herniation, brain edema, excluding intracranial complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is an exploded view of the adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt of the present invention;

[0016] Figure 2 This is a cross-sectional view of the outer sleeve at position AA of the present invention;

[0017] Figure 3 It is a side view of the outer sleeve of the present invention;

[0018] Figure 4 This is a cross-sectional view of the inner sleeve BB position of the present invention;

[0019] Explanation of the reference numerals: 1. outer sleeve; 101. knurled handle; 2. outer sleeve slideway I; 3. outer sleeve slideway II; 4. inner sleeve; 5. inner sleeve vertebral body; 6. inner sleeve slideway. DETAILED DESCRIPTION

[0020] like Figure 1-4 As shown, a cerebrospinal fluid peritoneal shunt adjustable shunt valve positioning device includes an outer sleeve 1 and an inner sleeve 4, the outer sleeve 1 is designed as a cylindrical tube, and the side wall of the cylindrical tube is provided with an outer sleeve slideway Ⅰ2 and an outer sleeve slideway Ⅱ3, and the centers of the outer sleeve slideway Ⅰ2 and the outer sleeve slideway Ⅱ3 are located on the same straight line; the inner sleeve 4 includes an inner sleeve vertebral body 5 and an inner sleeve body, the inner sleeve vertebral body 5 is fixedly connected to one end of the inner sleeve body, and the other end of the inner sleeve body is embedded in the inner hole of the outer sleeve 1, and the side wall of the inner sleeve body is provided with an inner sleeve slideway 6. Specifically, the diameter of the large head end of the inner sleeve vertebral body 5 is not less than the outer diameter of the outer sleeve 1, so as to ensure the smooth penetration process and avoid secondary damage to the edges.

[0021] Specifically, the outer tube slideway I2 and the outer tube slideway II3 have different widths, the width of the outer tube slideway I2 is greater than the width of the outer tube slideway II3, and the outer tube slideway I2 and the outer tube slideway II3 are connected to penetrate the entire side wall of the outer tube 1. Specifically, the width of the outer tube slideway I2 is 6 mm, and the width of the outer tube slideway II3 is set to 4 mm, which size matches the transverse diameter size of the adjustable pressure diverter valve.

[0022] The outer diameter of the inner sleeve body matches the inner diameter of the outer sleeve 1. For example, when the inner diameter of the outer sleeve 1 is set to φ14, the outer diameter of the inner sleeve body is also set to φ14, but the tolerances of the two are different, ensuring that the two can be quickly matched and separated after matching.

[0023] Specifically, Figure 1 ,4 As shown, the inner sleeve slideway 6 is a non-open slideway, and the inner sleeve slideway 6 is arranged at one end away from the inner sleeve cone 5. The opening length of the inner sleeve slideway 6 is 1 / 2-3 / 5 of the length of the inner sleeve body, and the width of the inner sleeve slideway 6 is set to 4 mm, which is consistent with the width of the outer sleeve slideway II 3, and this size matches the transverse diameter size of the adjustable pressure diverter valve.

[0024] Specifically, the outer sleeve 1 and the inner sleeve 4 are both made of stainless steel, specifically medical stainless steel 304, to ensure safety during use.

[0025] The outer wall of the outer sleeve 1 is provided with scale lines, and the setting of the scale lines can directly judge the length of the outer sleeve extending into the microhole by visual means, so that the operation is more convenient and accurate; the exposed end of the outer sleeve 1 is provided with a knurled handle 101, and the side wall of the knurled handle 101 is provided with anti-slip grooves. The design of the anti-slip grooves can ensure the grip or clamping degree during surgery and play an anti-slip role.

[0026] The working process of the present invention is as follows:

[0027] First, the outer sleeve 1 and the inner sleeve 4 are combined to form a tubular channel, wherein the total length of the outer sleeve 1 is 220 mm, and the total length of the inner sleeve 4 is 240 mm. A supporting tunnel is formed 3-8 mm under the abdominal skin to complete the embedding of the adjustable pressure diverter valve. When in use, the tubular channel is sterilized with ethylene oxide and is disposable.

[0028] Working principle: The inner sleeve 4 of the tubular channel has a non-open inner sleeve slide 6, and the outer sleeve 1 has an open slide, namely the outer sleeve slide Ⅰ2 and the outer sleeve slide Ⅱ3, and the width and diameter of the two slides are different. Through the separation and combination of the two sleeves and the fixed route of the slide, the adjustable pressure diverter valve is positioned and buried in the subcutaneous layer of the abdomen. Specifically, the adjustable pressure diverter valve consists of three parts: an adjustable pressure pump, a liquid storage bag, and a catheter. The transverse diameter of the adjustable pressure diverter valve is between 4-6mm, and the longitudinal diameter is 1mm wider than the diameter of the inner and outer sleeves; the ball diameter of the liquid storage bag is smaller than the diameter of the inner and outer sleeves, and the diameter of the catheter is less than 4mm. The shunt is pushed into the outer sleeve slideway Ⅰ2 by the inner sleeve slideway 6, and the shunt can be fixed in the outer sleeve slideway Ⅰ2 by the outer sleeve slideway Ⅱ3 and the inner sleeve slideway 6. Then, the shunt is effectively sent to the accurate position under the peritoneum by the advancement and withdrawal of the inner and outer sleeves, so as to play a positioning role; and the catheter can be removed from the slideway, which is convenient for embedding in the abdominal cavity and medullary cavity. The specific operation process is as follows:

[0029] Step 1: Minimally injure two points on the ventral side and the front of the abdomen respectively. Note that the distance between the two points is less than the length of the outer sleeve 1 in the positioning device of the present invention. Assemble the outer sleeve 1 and the inner sleeve 4 together to form a positioning device that enters from one side and exits from the other side to form an abdominal subcutaneous tunnel. During this operation, since the head of the inner sleeve 4 is the inner sleeve vertebral body 5, there is an obvious sense of breakthrough when breaking through the fascia and peritoneum. When the outer sleeve 1 and the inner sleeve 4 are assembled, the outer sleeve slideway Ⅰ2 and the inner sleeve slideway 6 are in opposite positions.

[0030] Step 2: After clearly entering the abdominal cavity, pull out the inner sleeve 4 from the outer sleeve 1, and then place the adjustable pressure diverter valve into the inner sleeve 4 along the inner sleeve slide 6. The transverse diameter of the adjustable pressure diverter valve needs to cooperate with the inner sleeve slide 6 to achieve the positioning function, ensure the stability of the adjustable pressure diverter valve when entering, and prevent it from flipping.

[0031] Step 3: The inner sleeve 4 is pushed along the outer sleeve slideway Ⅰ2 and the outer sleeve slideway Ⅱ3 of the outer sleeve 1, and the outer sleeve 1 is withdrawn accordingly, and the adjustable pressure diverter valve enters under the abdominal cortex to the required position, and the positioning is completed.

[0032] Step 4: After the adjustable pressure diverter valve is positioned, the inner and outer sleeves are withdrawn from both sides.

[0033] After positioning, one catheter end of the adjustable pressure shunt valve is connected to the cerebrospinal fluid tube, and the other catheter end is connected to the catheter placed in the abdominal cavity. There is an adjustable pressure pump in the middle. The cerebrospinal fluid flow is regulated and controlled by pressing the adjustable pressure pump from the abdominal epidermis, thereby achieving the purpose of controllable shunt of hydrocephalus.

[0034] In the present invention, the inner and outer sleeves are configured to be tubular and are provided with an inner sleeve slideway 6 and outer sleeve slideways Ⅰ2, Ⅱ3, so as to achieve 1) fixing the adjustable pressure diverter valve in cooperation with the outer sleeve slideway; 2) preventing the adjustable pressure diverter valve from flipping over; 3) facilitating the connection pipe at the conduit end of the adjustable pressure diverter valve to be detached from the positioning device.

[0035] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt, characterized in that: The invention comprises an outer sleeve (1) and an inner sleeve (4), wherein the outer sleeve (1) is designed to be cylindrical, and an outer sleeve slideway I (2) and an outer sleeve slideway II (3) are arranged on the side wall of the cylindrical tube, and the centers of the outer sleeve slideway I (2) and the outer sleeve slideway II (3) are located on the same straight line; the inner sleeve (4) comprises an inner sleeve cone (5) and an inner sleeve body, the inner sleeve cone (5) is fixedly connected to one end of the inner sleeve body, and the other end of the inner sleeve body is embedded in the inner hole of the outer sleeve (1), and an inner sleeve slideway (6) is arranged on the side wall of the inner sleeve body; The outer sleeve slideway I (2) and the outer sleeve slideway II (3) have different widths, the width of the outer sleeve slideway I (2) is greater than the width of the outer sleeve slideway II (3), and the outer sleeve slideway I (2) and the outer sleeve slideway II (3) are connected to each other and penetrate the entire side wall of the outer sleeve (1); The inner sleeve slideway (6) is a non-open slideway, and the inner sleeve slideway (6) is arranged at an end away from the inner sleeve vertebral body (5); The opening length of the inner sleeve slideway (6) is 1 / 2-3 / 5 of the length of the inner sleeve body.

2. The adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt according to claim 1, characterized in that: The outer diameter of the inner sleeve body matches the inner diameter of the outer sleeve (1).

3. The adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt according to claim 1, characterized in that: The outer sleeve (1) and the inner sleeve (4) are both made of stainless steel.

4. The adjustable shunt valve positioning device for cerebrospinal fluid peritoneal shunt according to claim 1, characterized in that: The outer wall of the outer sleeve (1) is provided with scale lines, the exposed end of the outer sleeve (1) is provided with a knurled handle (101), and the side wall of the knurled handle (101) is provided with anti-slip patterns.

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