An implantable wireless nerve stimulator with a fixed anchor

Abstract

An implantable wireless nerve stimulator with fixed anchors, comprising a stimulator body and several sets of fixed anchor components for fixing the stimulator body. The fixed anchor components are arranged on the periphery of the stimulator body. The stimulator body includes a body housing, with a cathode electrode and an anode electrode respectively arranged at the front and rear ends of the body housing. Inside the body housing, there are an electrode driving circuit board and a battery pack, and the electrode driving circuit board is respectively connected to the cathode electrode, the anode electrode and the battery pack. Compared with the prior art, the stimulator of the present invention is equipped with fixed anchor components. The fixed anchors open when the stimulator body enters a predetermined position and are fixed to the tissue through the anchor claws, so that the stimulator does not displace in the human body, achieving a better treatment effect. The implantable wireless nerve stimulator body of the present invention has stimulating electrodes at both ends, without the need for stimulating leads. Moreover, this stimulator is smaller in size and easier to implant, reducing the pain during the treatment process to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an implantable wireless nerve stimulator with fixed anchors. Background Art

[0002] Breakthrough progress has been made in the research of implantable nerve stimulation therapy at the end of the last century and it has been widely applied in clinical practice. This treatment method has shown significant curative effects on more than 20 kinds of nerve dysfunction disorders, and its prominent features are minimally invasive and safe. Since the birth of levodopa in 1968, the most important achievement in the field of Parkinson's treatment is deep brain stimulation. In European and American countries, it is very common to use vagus nerve stimulation to treat intractable epilepsy and spinal cord stimulation to treat intractable pain. Moreover, a large number of clinical practices have shown that this implantable nerve stimulation therapy has significant effects on assisting the respiratory system, gastrointestinal system, excretory system, and motor system, and can also be used for the treatment of mental depression, hypertension, obesity, etc., as well as stimulating bone growth and assisting in drug rehabilitation. Summary of the Invention

[0003] Aiming at the above-mentioned defects existing in the prior art, the present invention provides an implantable wireless nerve stimulator with fixed anchors as follows:

[0004] The technical solution of the present invention is realized as follows:

[0005] An implantable wireless nerve stimulator with fixed anchors, comprising a stimulator body and a plurality of sets of fixed anchor components for fixing the stimulator body, and the fixed anchor components are arranged on the periphery of the stimulator body.

[0006] Preferably, the stimulator body includes a body housing, a cathode electrode and an anode electrode are respectively arranged at the front and rear ends of the body housing, an electrode driving circuit board and a battery pack are arranged inside the body housing, the electrode driving circuit board is respectively connected to the cathode electrode, the anode electrode and the battery pack, and the inside and outside of the body housing are sealed by epoxy sealant.

[0007] Preferably, the body housing is cylindrical, and a plurality of axial cylindrical channels are arranged on the outer side. The channels are blind holes, one end of the channel is closed, the other end is open, and the open end contains an internal step. A set of fixed anchor components is arranged in the channel.

[0008] Preferably, the fixed anchor assembly includes a fixed anchor rod and a fixed anchor claw, the fixed anchor rod is linear, starting from one end of the fixed anchor rod, a plurality of fixed anchor claws are arranged in sequence from the end face, and the fixed anchor claws are fixedly installed in a circular groove opened on the periphery of the fixed anchor rod; the claw direction of the fixed anchor claw faces the other end face, and from the starting position of the first fixed anchor claw to the direction of the other end, at a position of 2 / 3 of the total length of the fixed anchor rod, a cylindrical step is provided on the periphery of the fixed anchor rod, and the fixed anchor rod is installed in a cylindrical channel of the main body shell, and one end with the fixed anchor claw faces the opening direction of the channel, and a compression spring is strung in a position below the step of the fixed anchor rod. When the fixed anchor assembly is not anchored, the compression spring is in a compressed state, and the entire fixed anchor assembly is compressed in the channel, and a shift plate for limiting the pop-up of the fixed anchor rod is provided at the opening of the channel.

[0009] Preferably, the fixed anchor claw is formed by one-piece molding, the bottom of the fixed anchor claw is a circular ring, and there are four anchor plates on the circular ring. The four anchor plates are arranged in four equal parts around the circle, the anchor plates are long waist-shaped and have an overall curvature, and there is an angle of 162 degrees between the anchor plates and the circular ring, and the anchor plates are elastic.

[0010] Preferably, six axial cylindrical channels are provided on the outer side of the main body shell, and the six cylindrical channels are sequentially arranged at an angle of 60° on the outer circumference of the main body shell, and the opening directions of two adjacent cylindrical channels are opposite.

[0011] Preferably, shift plates are respectively provided at both ends of the main body shell, and the shift plates are in the shape of flying discs, which are respectively fixed on the grooves provided on the cathode electrode and the anode electrode, and block the popping out of the fixed anchor rods. After the shift plates are rotated and moved, each fixed anchor rod will pop out from the channel of the main body shell at the same time.

[0012] Preferably, an insertion hole into which a toggle bar can be inserted is arranged on the outer side of the main body shell, and the toggle bar is used to toggle the toggle block to rotate.

[0013] Preferably, the extending gap is a long groove formed between two adjacent channels on the outer side of the main body shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides an implantable wireless neural stimulator with a fixed anchor, which is provided with a fixed anchor assembly. The fixed anchor is opened when the stimulator body enters a predetermined position, and is fixed to the tissue by an anchor claw, so that the stimulator does not move in the human body, thereby achieving a better treatment effect. The implantable wireless neural stimulator body of the present invention has stimulation electrodes at both ends, and no stimulation wire is required. The stimulator is smaller in size and easy to implant, which reduces the pain during the treatment process to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic structural diagram of the implantable wireless nerve stimulator with a fixed anchor according to the present invention;

[0017] Figure 2 Schematic structural diagram of the implantable wireless nerve stimulator with a fixed anchor according to the present invention (excluding the main body housing);

[0018] Figure 3 Schematic structural diagram of the main body housing of the present invention;

[0019] Figure 4 Axial sectional view of the main body housing of the present invention;

[0020] Figure 5 Schematic structural diagram of the fixed anchor assembly of the present invention;

[0021] Figure 6 Schematic structural diagram of the fixed anchor claw of the present invention;

[0022] Figure 7 Schematic structural diagram of the main body housing and the fixed anchor assembly of the present invention;

[0023] Figure 8 Schematic structural diagram of the main body housing and the shift piece of the present invention;

[0024] Figure 9 Schematic structural diagram of the main body housing, the shift piece and the anode electrode of the present invention.

[0025] In the figure: stimulator main body 100, main body housing 110, cathode electrode 111, anode electrode 112, electrode drive circuit board 113, battery pack 114, channel 115, fixed anchor assembly 200, fixed anchor rod 210, step 211, fixed anchor claw 220, ring 221, anchor piece 222, compression spring 230, shift piece 240. Detailed implementation manners

[0026] Next, the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] As Figure 1 , Figure 2 , Figures 7 - 9 shown, an implantable wireless nerve stimulator with a fixed anchor includes a stimulator main body 100 and a plurality of sets of fixed anchor assemblies 200 that can fix the stimulator main body 100. The fixed anchor assemblies 200 are arranged on the periphery of the stimulator main body 100. When the stimulator main body 100 enters the tissue along with the puncture needle, the fixed anchor assemblies 200 can be hidden on the periphery of the stimulator main body 100. When the predetermined position is reached and the puncture needle is withdrawn, the hidden fixed anchor assemblies 200 are activated to make them anchor and fix.

[0028] The stimulator body 100 includes a body housing 110. At the front and rear ends of the body housing 110, a cathode electrode 111 and an anode electrode 112 are respectively provided. Inside the body housing 110, there are an electrode driving circuit board 113 and a battery pack 114. The electrode driving circuit board 113 is respectively connected to the cathode electrode 111, the anode electrode 112, and the battery pack 114. The inside and outside of the body housing 110 are sealed with epoxy sealant. As shown in the figure, inside the cavity of the body housing 110, there is a cylindrical lithium battery (battery pack 114) and a circuit board (electrode driving circuit board 113), and the two are arranged in a longitudinal straight line. The circuit board and the lithium battery are connected by a rigid wire, and the circuit board is connected to the cathode electrode 111 and the anode electrode 112 by a flexible wire with an insulating layer. Inside the cavity of the body housing 110, it is filled with transparent epoxy resin to keep the inside full and bubble-free.

[0029] As Figure 3 , Figure 4 shown, the body housing 110 is cylindrical, and there are several axial cylindrical channels 115 on the outside. The channels 115 are blind holes, one end of the channel is closed and the other end is open. The open end a contains an internal step 116. A set of fixed anchor assemblies 200 are arranged inside the channels 115.

[0030] As Figure 5 shown, the fixed anchor assembly 200 includes a fixed anchor rod 210 and fixed anchor claws 220. The fixed anchor rod 210 is linear. Starting from one end of the fixed anchor rod 210, a plurality of fixed anchor claws 220 are arranged in sequence starting from the end face. In the present invention, three fixed anchor claws 220 are selected and used. The fixed anchor claws 220 are fixedly installed in a circular card slot opened on the periphery of the fixed anchor rod 210 and are bonded with an adhesive; the claw directions of the fixed anchor claws 220 face the other end face. In the direction from the starting position of the first fixed anchor claw 220 to the other end, at the 2 / 3 position of the total length of the fixed anchor rod 210, there is a cylindrical step 211 on the periphery of the fixed anchor rod 210, and the thickness of the step 211 is 1 / 30 of the length of the fixed anchor rod 210. The fixed anchor rod 210 is installed in the cylindrical channel 115 of the body housing 110, and the end with the fixed anchor claws 220 faces the opening direction of the channel 115. At the position below the step 211 of the fixed anchor rod 210, a compression spring 230 is strung. When the fixed anchor assembly 200 is not anchored, the compression spring 230 is in a compressed state, and the entire fixed anchor assembly 200 is compressed in the channel 115. A shifting piece 240 for restricting the ejection of the fixed anchor rod 210 is arranged at the opening of the channel 115. At this time, the fixed anchor assembly 200 is in a hidden state.

[0031] As Figure 6As shown, the fixed anchor claw 220 is formed by one-piece molding. The bottom of the fixed anchor claw 220 is a circular ring 221. There are four anchor plates 222 on the circular ring 221. The four anchor plates 222 are arranged in four equal parts around the circle. The anchor plates 222 are long waist-shaped and have an overall curvature. There is an angle of 162 degrees between the anchor plates 222 and the circular ring 221. The anchor plates 222 are elastic to prevent the fixed anchor rod 210 from being stuck in the channel 115 and unable to pop out.

[0032] Six axial cylindrical channels 115 are provided on the outside of the main body shell 110. The six cylindrical channels 115 are arranged in sequence at an angle of 60° on the outer circumference of the main body shell 110, and the opening directions of two adjacent cylindrical channels 115 are opposite, that is, there are three channels 115 openings at both ends of the main body shell 110, which is suitable for triangular stability, and adjacent channels opening at the same end are at an angle of 120°.

[0033] The two ends of the main body shell 110 are respectively provided with a shifting piece 240, and the shifting piece 240 is in the shape of a flying disc, and is respectively fixed on the grooves provided on the cathode electrode 111 and the anode electrode 112, and blocks the pop-up of the fixed anchor rod 210. After the shifting piece 240 is rotated and shifted, each fixed anchor rod 210 will be simultaneously popped out from the channel 115 of the main body shell 110. The cathode electrode 111 and the anode electrode 112 at both ends of the main body shell 110 are fixed to the main body shell 110, and the inside is sealed. The two electrodes are in the shape of a raised flying disc, and the edges have 6 identical grooves.

[0034] The outer side of the main body shell 110 is provided with an insertion hole for inserting a toggle bar, and the toggle bar is used to toggle the toggle piece to rotate. When anchoring is required, the wave bar extends through the hole to the position of the toggle piece 240, and the toggle piece is rotated to release the limit of the toggle piece for the fixed anchor rod 210. The compression spring 230 pops out one end of the fixed anchor rod 210 with the fixed anchor claw 220, and the fixed anchor claw 220 extends into the tissue, thereby fixing the stimulator body 100.

[0035] The extending gap is a long groove formed between two adjacent channels 115 on the outside of the main shell 110. The shape of the channel 115 can be coordinated with the puncture needle of the outer sleeve to prevent the main shell 110 from rotating when the wave bar toggles the shift plate 240, affecting the normal pop-up of the fixed anchor rod 210.

[0036] Based on the structure and usage process of the present invention, an implantable wireless nerve stimulator with a fixed anchor is provided. It is equipped with a fixed anchor assembly. The fixed anchor opens when the stimulator body enters a predetermined position and is fixed to the tissue through the anchor claws, so that the stimulator does not displace in the human body, achieving a better therapeutic effect. The two ends of the implantable wireless nerve stimulator body of the present invention are provided with stimulating electrodes, eliminating the need for stimulating leads. Moreover, this stimulator is smaller in size and easier to implant, reducing the pain during the treatment process to a certain extent.

Claims

1. An implantable wireless neurostimulator with a fixed anchor, It is characterized in that It includes a stimulator body and a plurality of fixing anchor components that can fix the stimulator body, wherein the fixing anchor components are arranged on the periphery of the stimulator body; The fixed anchor assembly includes a fixed anchor rod and a fixed anchor claw, and the fixed anchor rod is linear, starting from one end of the fixed anchor rod, a plurality of fixed anchor claws are arranged in sequence from the end face, and the fixed anchor claws are fixedly installed in a circular groove opened on the periphery of the fixed anchor rod; the claw direction of the fixed anchor claw faces the other end face, and from the starting position of the first fixed anchor claw to the direction of the other end, at a position of 2 / 3 of the total length of the fixed anchor rod, a cylindrical step is provided on the periphery of the fixed anchor rod, and the fixed anchor rod is installed in a cylindrical channel of the main body shell, and one end with the fixed anchor claw faces the opening direction of the channel, and a compression spring is strung at a position below the step of the fixed anchor rod. When the fixed anchor assembly is not anchored, the compression spring is in a compressed state, and the entire fixed anchor assembly is compressed in the channel, and a blocking piece for limiting the pop-up of the fixed anchor rod is provided at the opening of the channel; The two ends of the main body shell are respectively provided with a toggle plate, which is in the shape of a flying disc and is respectively fixed on the grooves provided on the cathode electrode and the anode electrode, and blocks the popping out of the fixed anchor rods. After the toggle plate is rotated and moved, each fixed anchor rod will pop out from the channel of the main body shell at the same time.

2. The implantable wireless neural stimulator with a fixed anchor as claimed in claim 1, It is characterized in that The stimulator body includes a body shell, and a cathode electrode and an anode electrode are respectively arranged at the front and rear ends of the body shell. An electrode driving circuit board and a battery pack are arranged inside the body shell. The electrode driving circuit board is respectively connected to the cathode electrode, the anode electrode and the battery pack. The inside and outside of the body shell are sealed by epoxy sealant.

3. The implantable wireless neural stimulator with a fixed anchor as claimed in claim 2, It is characterized in that The main body shell is cylindrical, and a plurality of axial cylindrical channels are arranged on the outside. The channels are blind holes, one end of the channels is closed, and the other end is open. The open end contains a built-in step, and a set of fixed anchor components is arranged in the channels.

4. The implantable wireless neural stimulator with a fixed anchor as claimed in claim 3, It is characterized in that The fixed anchor claw is formed by one-piece molding. The bottom of the fixed anchor claw is a circular ring. There are four anchor plates on the circular ring. The four anchor plates are arranged in four equal parts around the circle. The anchor plates are long-waisted and have an overall curvature. There is an angle of 162 degrees between the anchor plates and the circular ring. The anchor plates are elastic.

5. The implantable wireless neural stimulator with a fixed anchor as claimed in claim 4, It is characterized in that Six axial cylindrical channels are arranged on the outer side of the main body shell. The six cylindrical channels are arranged on the outer circumference of the main body shell at an angle of 60 degrees, and the opening directions of two adjacent cylindrical channels are opposite.

6. The implantable wireless neural stimulator with a fixed anchor as claimed in claim 5, It is characterized in that The outer side of the main body shell is provided with an insertion hole into which the toggle bar can be inserted, and the toggle bar is used to toggle the toggle block piece to rotate.

7. The implantable wireless nerve stimulator with a fixed anchor as described in claim 6, wherein, the insertion pore is a long groove formed between two adjacent channels on the outer side of the body housing.

Images