Endoscopic injection needle holder and endoscopic injection needle using the needle holder

Abstract

The present invention relates to an endoscopic injection needle holder and an endoscopic injection needle using the needle holder, the endoscopic injection needle holder is used in conjunction with the endoscopic injection needle, and is characterized in that: the endoscopic injection needle holder comprises a main body that can be held in the doctor's hand, for fixing a syringe that can provide liquid medicine to the endoscopic injection needle, a control part that is configured to be connected to an operating part that can control the insertion and withdrawal of the endoscopic injection needle, a holding part for the doctor's finger to abut against, and a transmission part, which can be directly triggered when the doctor pushes the syringe in response to the action of the finger pulling the holding part, so as to switch the endoscopic injection needle to the insertion state. Compared with the prior art, the advantage of the present invention is that it provides an endoscopic injection needle holder, which can facilitate the doctor to integrate the syringe and the operating part that can remotely control the insertion and withdrawal of the endoscopic injection needle into one body, so as to facilitate the doctor to perform a single-handed operation of injecting liquid medicine into the disease.

Description

Technical Field

[0001] The invention relates to an injection needle inserted into a forceps channel of an endoscope, and in particular to an endoscope injection needle holder suitable for a doctor to remotely control the needle withdrawal operation of the injection needle with one hand. Background Art

[0002] An endoscope is a tube equipped with a light, which can be inserted into the stomach through the mouth or into the body through other natural cavities. An endoscope can be used to see lesions that cannot be shown by X-rays, so it is very useful for doctors. For example, with the help of an endoscope, a doctor can observe ulcers or tumors in the digestive tract and formulate the best treatment plan based on this. As an example of an endoscopic treatment instrument, Japanese Patent Gazette No. 2001-58006 (Patent Document 1) discloses an injection needle for injecting a liquid medicine into an affected part in a body cavity, etc. In the endoscopic injection needle, there is provided an elongated insertion portion that can be inserted into the endoscope channel, and an operating portion connected to the base end of the insertion portion. The above-mentioned insertion portion includes a double tube, which has an outer tube and an inner tube that is inserted into the outer tube in a manner that allows it to move forward and backward freely. The above-mentioned operating portion performs the operation of moving the above-mentioned inner and outer tubes forward and backward. A hollow needle body is installed at the front end of the inner tube, wherein at least the inner tube and the outer tube of the double tube are made of different kinds of plastic materials, and the outer tube is made of a harder material than the inner tube. Such endoscopic treatment instruments such as endoscopic injection needles and double tubes for treatment instruments have good operability in needle removal operations and the like even when treatment is performed with the insertion portion inserted into the body bent, so that the disease can be treated stably.

[0003] However, the above-mentioned injection needle usually only has a simple injection function. When in use, all the needle insertion and withdrawal operations need to be completed by hand, and the whole process cannot be separated from the operator's hand control, which is relatively laborious and brings inconvenience to the operation. For this reason, a Chinese invention patent with patent number ZL201210014952.X (authorization announcement number CN102551846A) "Disposable remote injection needle for use under endoscope" includes a needle, an inner tube, an outer tube and an outer shell. The needle is arranged at one end of the inner tube, and the inner tube is arranged at the outer tube (inside, and the outer tube is connected to the outer shell. It is characterized in that it also includes an injection push rod, one end of which extends into the outer shell and is slidably connected to the outer shell. An elastic body is arranged in the outer shell, and the elastic body is connected to the injection push rod. When in use, you only need to use your thumb or index finger to press the trigger, and the locking plug is inserted into the locking socket, and the locking plug is automatically locked by the cooperation of the check hook and the inverted rack. Self-locking position, the needle can be automatically retracted under the action of the elastic body by pressing the release button with one hand, without manual pulling, thus overcoming the disadvantages of existing injection needles that require two-handed operation or are complicated and inconvenient to operate with one hand; however, when the injection needle needs to be operated to inject liquid medicine into a disease, it is necessary to first use the thumb or index finger to press the trigger so that the locking plug is inserted into the locking socket, and the needle is in an extended state, and then the syringe connected to the end of the inner tube can be pushed to push the liquid medicine. Therefore, the extension of the needle and the pushing of the syringe need to be divided into two steps. In actual use, the doctor's one-handed operation is still not possible, so further improvement is needed. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide an endoscopic injection needle holder that allows doctors to more easily control the needle removal operation of the injection needle with one hand in view of the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide an endoscopic injection needle holder which can better control the needle tip of the injection needle to be in the needle-out state and facilitate the doctor to push the syringe to operate in view of the above-mentioned existing technical status.

[0006] The third technical problem to be solved by the present invention is to provide an endoscopic injection needle using the endoscopic injection needle holder in view of the above-mentioned existing technical status.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the endoscopic injection needle holder, which is used in conjunction with the endoscopic injection needle, is characterized in that: the endoscopic injection needle holder includes:

[0008] A main body, which can be held in the doctor's hand and is used to fix a syringe that can provide liquid medicine to the endoscopic injection needle;

[0009] A control unit is configured to be connected to an operating unit capable of controlling the insertion and withdrawal of the endoscopic injection needle, the control unit being disposed on the main body and further comprising:

[0010] a holding portion, disposed on the main body, for a doctor's finger to abut against to hold the syringe; and

[0011] The transmission part can be directly triggered by the action of the corresponding finger control control part when the doctor pushes the syringe, so as to switch the endoscopic injection needle to the needle insertion state.

[0012] To solve the second technical problem, preferably, the holding portion includes a clamping finger hole portion for the doctor's middle finger and ring finger to be inserted to clamp the syringe, and the control portion includes an operating finger hole portion for the doctor's index finger and little finger to be inserted to cooperate with the thumb to push the syringe, and the operating finger hole portion includes an index finger portion and a little finger portion respectively located at the periphery of the clamping finger hole portion; the index finger portion and the little finger portion can rotate relative to the main body; so that when the doctor pushes the syringe, the transmission portion can be directly triggered to switch the endoscopic injection needle to the needle insertion state in response to the action of the index finger and the little finger to close the operating finger hole portion. Since the index finger and the little finger need to be closed toward the palm position when corresponding to the closing action, in order to improve the comfort of the doctor's operation when holding the endoscopic injection needle holder, it is preferred that the operating finger hole portion can follow the closing action of the index finger and the little finger and rotate within a small angle range, such as 2 to 15°.

[0013] Furthermore, the transmission part includes:

[0014] A first transmission rod is arranged along the direction where the endoscopic injection needle is ejected, and a front end of the first transmission rod corresponding to the same direction as the needle ejection direction is provided with a fixing member capable of fixing an operating part for controlling the insertion and withdrawal of the endoscopic injection needle, and a rear end of the first transmission rod corresponding to the opposite direction of the needle ejection is provided with a guide member capable of limiting the first transmission rod to move only along the insertion or withdrawal direction of the endoscopic injection needle, and the guide member is arranged at the bottom of the main body;

[0015] A second transmission rod is also arranged along the direction where the endoscope injection needle is ejected, and is located downstream of the rear end of the first transmission rod. The front portion of the second transmission rod has a first pivot point for the index finger portion of the operating finger hole portion to rotate;

[0016] The third transmission rod is also arranged along the direction where the endoscope injection needle is ejected, and is located downstream of the rear end of the first transmission rod. The third transmission rod and the second transmission rod are arranged side by side on the left and right sides of the first transmission rod, respectively. The front end of the third transmission rod has a second pivot point for the little finger of the operating finger hole to rotate;

[0017] as well as

[0018] The first connecting rod is arranged perpendicular to the direction in which the endoscopic injection needle comes out, and is connected to the rear end of the first transmission rod, and is used to connect the second transmission rod and the third transmission rod; thereby, when the doctor pushes the syringe, the corresponding index finger and little finger will directly drive the second transmission rod and the third transmission rod to move backward, and then drive the first transmission rod to drive the operating part to move backward, so as to switch the endoscopic injection needle to the needle insertion state.

[0019] In order to enable the endoscopic injection needle to be more easily switched to the needle withdrawal state when the doctor completes the operation of injecting the liquid medicine to the disease, preferably, the control unit also includes:

[0020] an elastic member, disposed in the main body, so that the endoscopic injection needle has a tendency to retract to a needle withdrawal state; and

[0021] The limiting member limits the transmission part when the transmission part is triggered to switch the endoscopic injection needle to the needle insertion state. Under the action of the elastic member, the endoscopic injection needle can automatically return to the needle withdrawal state. In addition, in order to meet the doctor's need for a longer time to complete the injection of liquid medicine for the disease, the endoscopic injection needle must be kept in a longer needle withdrawal state under the action of the limiting member.

[0022] There are many options for the limiting member. From the perspective of simple structure and convenient processing, preferably, the elastic member is divided into a first elastic member corresponding to the second transmission rod, wherein the rear portion of the second transmission rod has a front side wall opening to accommodate a second lock seat of the first elastic member, and the second transmission rod can be slidably inserted into the second lock seat, and the limiting member includes a first rear magnet embedded in the rear side wall of the second lock seat and a first front magnet arranged on the rod body of the second transmission rod, the first front magnet is spaced apart from the first rear magnet, and the polarities of the first rear magnet and the first front magnet are opposite, and one end of the first elastic member abuts on the first rear magnet, and the other end abuts on the first front magnet, and the first elastic member makes the first rear magnet and the first front magnet always have a tendency to separate. When the doctor pushes the syringe, the corresponding index finger and little finger directly move backward, which in turn drives the first transmission rod and the operating part to move backward, so as to switch the endoscopic injection needle to the needle insertion state. At this time, the first elastic part of the second transmission rod between the first front magnet and the first rear magnet is compressed and is in an energy storage state due to the magnetic attraction between the two. At this time, the second transmission rod does not move, and the first transmission rod also remains stationary. The first transmission rod drives the operating part to move backward, so as to keep the endoscopic injection needle in the needle insertion state.

[0023] Similarly, the elastic member is divided into a second elastic member corresponding to the third transmission rod, wherein the rear end of the third transmission rod has a front side wall opening to accommodate the third lock seat of the second elastic member, and the third transmission rod can be slidably inserted into the third lock seat, and the limit member includes a second rear magnet embedded in the rear side wall of the third lock seat and a second front magnet arranged on the rod body of the third transmission rod, the second front magnet is arranged at a distance from the second rear magnet, and the second rear magnet and the second front magnet have opposite polarities, and one end of the second elastic member abuts on the second rear magnet, and the other end abuts on the second front magnet, and the second elastic member makes the second rear magnet and the second front magnet always have a tendency to separate. At this time, the second elastic member of the third transmission rod between the second front magnet and the second rear magnet is compressed and is in an energy storage state due to the magnetic attraction between the two. At this time, the third transmission rod does not move, and the first transmission rod also remains stationary. The first transmission rod drives the operating part to move backward to keep the endoscopic injection needle in the needle insertion state.

[0024] In order to achieve synchronous movement of the second transmission rod and the third transmission rod, preferably, the rear portion of the second transmission rod can pass through the second lock seat, the rear end portion of the third transmission rod can pass through the third lock seat, and the rear portion of the second transmission rod and the rear end portion of the third transmission rod are connected by a second connecting rod.

[0025] Furthermore, a fixing seat and a fixing rod connecting the second lock seat and the third lock seat are provided between the second lock seat and the third lock seat, and the fixing seat is fixed to the bottom of the main body.

[0026] In order to meet the engineering mechanics of the human body and improve the comfort of the doctor's grip, preferably, a sphere that can match the palm of the doctor's hand is provided at the bottom of the main body at the rear of the fixing seat.

[0027] To solve the third technical problem, the present invention provides an endoscopic injection needle using the endoscopic injection needle holder as described above, wherein the endoscopic injection needle has an insertion portion and an operating portion, wherein the insertion portion has an outer tube and an inner tube, wherein the inner tube is freely arranged in the outer tube and has a needle body fixed at the front end, wherein the operating portion is fixedly connected to the outer tube to perform the needle insertion and withdrawal operations of the needle body of the inner tube, wherein the end of the inner tube is detachably connected to a syringe that can provide liquid medicine to the inner tube, and wherein the upper surface of the main body has a fixing portion that can fix the end of the inner tube, and wherein at least a part of the transmission portion is located below the operating portion. The setting of the fixing portion of the main body enables the inner tube of the endoscopic injection needle to be in direct fluid communication with the injection needle, and the fixing of the end of the inner tube by the fixing portion of the endoscopic injection needle holder can be realized by simply pulling the operating portion fixedly connected to the outer tube, that is, the transmission portion can be directly triggered by the action of the finger pulling the abutting portion when the doctor pushes the syringe, so as to switch the endoscopic injection needle to the needle insertion state.

[0028] Compared with the prior art, the advantage of the present invention is that it provides an endoscopic injection needle holder, which can facilitate doctors to integrate the syringe and the operating part that can remotely control the insertion and withdrawal of the endoscopic injection needle into one body. When the doctor pushes the syringe, the corresponding finger controls the action of the control part on the endoscopic injection needle holder, which directly triggers the operating part connected to the operating part, so that the endoscopic injection needle can be easily switched to the insertion state, which is convenient for the doctor to inject the disease with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of an angle of the endoscopic injection needle holder in Example 1 of the present invention;

[0030] Figure 2 This is a schematic structural diagram of the endoscopic injection needle holder in Embodiment 1 of the present invention from another angle;

[0031] Figure 3 This is a structural schematic diagram of the endoscopic injection needle holder in Embodiment 1 of the present invention at another angle;

[0032] Figure 4 This is a schematic diagram of the structure of an endoscopic injection needle in Example 1 of the present invention;

[0033] Figure 5 for Figure 4 A cross-sectional view of

[0034] Figure 6 This is a schematic diagram of the structure in which a syringe and an endoscopic injection needle are fixed on an endoscopic injection needle holder in Example 1 of the present invention;

[0035] Figure 7 for Figure 6 Schematic diagram of the structure from another angle;

[0036] Figure 8 for Figure 6 A schematic diagram of the structure from another angle;

[0037] Fig. 9 for Figure 6 A cross-sectional view at an angle;

[0038] Fig.10 It is a cross-sectional view of the syringe on the endoscope injection needle holder in Example 1 of the present invention in a state where no liquid medicine is needed to be injected into the disease;

[0039] Fig.11 It is a cross-sectional view of the syringe on the endoscope injection needle holder in Example 1 of the present invention in a state where a liquid medicine needs to be injected into a disease;

[0040] Fig.12This is a schematic diagram of the structure of the endoscopic injection needle holder in Example 3 of the present invention;

[0041] Fig.13 for Fig.12 Schematic diagram of the decomposition structure;

[0042] Fig.14 This is a schematic diagram of the structure in which a syringe is fixed on an endoscope injection needle holder in Example 3 of the present invention. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below with reference to the accompanying drawings.

[0044] Example 1

[0045] like Figures 1 to 11 The endoscope injection needle holder 1 of this embodiment is used in conjunction with the endoscope injection needle 2. The endoscope injection needle holder 1 includes a main body 11 that can be held in the doctor's hand, the main body 11 is used to fix the syringe 21 that can provide liquid medicine to the endoscope injection needle 2, and a control unit 12 that is configured to be connected to an operating unit 22 that can control the insertion and withdrawal of the endoscope injection needle 2. The endoscope injection needle holder 1 also includes a holding portion 13 for the doctor's finger to hold the syringe 21, and a control unit 12 that can be directly triggered when the doctor pushes the syringe 21. , so as to switch the endoscopic injection needle 2 to the needle insertion state. After the transmission part 14 is triggered, the endoscopic injection needle 2 can be switched to the needle insertion state. The endoscopic injection needle holder can facilitate the doctor to integrate the syringe 21 and the operating part 22 that can remotely control the needle insertion and withdrawal of the endoscopic injection needle 2 into one body. When the doctor pushes the syringe 21, the corresponding finger controls the action of the control part 12 on the endoscopic injection needle holder 1, and directly triggers the operating part 22 connected to the operating part 22, so that the endoscopic injection needle 2 can be easily switched to the needle insertion state, which is convenient for the doctor to inject the disease with one hand.

[0046] Specifically, the holding portion 13 includes a clamping finger hole portion 131 for the doctor's middle finger and ring finger to be inserted to clamp the syringe 21, and the control portion 12 includes an operating finger hole portion 132 for the doctor's index finger and little finger to be inserted to cooperate with the thumb to push the syringe 21. The operating finger hole portion 132 includes an index finger portion 1321 and a little finger portion 1322 respectively located at the periphery of the clamping finger hole portion 131, and the index finger portion 1321 and the little finger portion 1322 can rotate relative to the main body 11, so that when the doctor pushes the syringe 21, the corresponding index finger and little finger correspond to the action of closing the operating finger hole portion 132, and the transmission portion 14 can be directly triggered to switch the endoscopic injection needle 2 to the needle insertion state. Since the index finger and the little finger need to be retracted toward the palm position during the corresponding retraction action, in order to improve the comfort of operation when the doctor holds the endoscopic injection needle holder 1, the operating finger hole portion 132 includes an index finger portion 1321 for the index finger to pass through and a little finger portion 1322 for the little finger to pass through, and the index finger portion 1321 and the little finger portion 1322 are respectively located at the periphery of the clamping finger hole portion 131, so that when the doctor pushes the syringe 21, the corresponding finger retraction action is directly triggered to switch the endoscopic injection needle 2 to the needle insertion state, wherein the index finger portion 1321 and the little finger portion 1322 can be operated to rotate within a small angle range, such as 2 to 15°, following the retraction action of the index finger and the little finger, so that the doctor's hands are in a more comfortable state during operation.The transmission part 14 of the main body 11 includes a first transmission rod 141 arranged along the direction where the endoscopic injection needle 2 is ejected. The front end 1412 of the first transmission rod 141 corresponding to the same direction of the needle ejection is provided with a fixing member 142 capable of fixing the operating part 22 for controlling the insertion and withdrawal of the endoscopic injection needle 2. The rear end 1411 of the first transmission rod 141 corresponding to the opposite direction of the needle ejection is provided with a guide member 143 capable of limiting the first transmission rod 141 to move only in the insertion or withdrawal direction of the endoscopic injection needle 2. The guide member 143 is arranged on the main body 11. The bottom of the endoscope injection needle 2 is also provided along the direction where the endoscope injection needle 2 is provided, the second transmission rod 144 is located downstream of the rear end 1411 of the first transmission rod 141, and the front portion 1442 of the second transmission rod 144 has a first pivot point 1441 for the index finger portion 1321 of the operating finger hole portion 132 to rotate; and the third transmission rod 145 is also provided along the direction where the endoscope injection needle 2 is provided, the third transmission rod 145 is located downstream of the rear end 1411 of the first transmission rod 141, and The front end portion 1452 of the third transmission rod 145 is arranged side by side with the second transmission rod 144 on the left and right sides of the first transmission rod 141, and has a second pivot point 1451 for the little finger portion 1322 of the operating finger hole portion 132 to rotate; and a first connecting rod 146 is arranged perpendicular to the direction where the endoscopic injection needle 2 is ejected, and the first connecting rod 146 is connected to the rear end 1411 of the first transmission rod 141, and is used to connect the second transmission rod 144 and the third transmission rod 145, so as to realize that when the doctor pushes the syringe 21 When the doctor does not need to inject, the corresponding index finger and little finger directly drive the second transmission rod 144 and the third transmission rod 145 to move forward under the contraction action, and then drive the first transmission rod 141 to drive the operating part 22 to move backward to switch the endoscopic injection needle 2 to the needle insertion state. Conversely, when the doctor does not need to inject, the corresponding index finger and little finger directly drive the second transmission rod 144 and the third transmission rod 145 to move forward under the expansion action, and then drive the first transmission rod 141 to drive the operating part 22 to move forward to switch the endoscopic injection needle 2 to the needle withdrawal state.

[0047] In addition, in order to enable the endoscopic injection needle 2 to switch to the withdrawn needle state more easily when the doctor completes the operation of injecting the medicine into the patient, preferably, the control unit 12 also includes an elastic member arranged in the main body 11, which can make the endoscopic injection needle 2 have a tendency to retract to the withdrawn needle state, and when the transmission part 14 is triggered to switch the endoscopic injection needle 2 to the inserted needle state, a limit member 16 that limits the transmission member can be used. As long as the doctor completes the operation of injecting the medicine, as long as the index finger and the little finger are extended forward, the endoscopic injection needle 2 can automatically return to the withdrawn needle state under the action of the elastic member. In addition, in order to meet the doctor's sometimes longer time to complete the injection of the medicine into the patient, the endoscopic injection needle 2 can be kept in a longer needle-out state under the action of the limit member 16. There are many options for the limiting member 16. From the perspective of simple structure and convenient processing, preferably, the elastic member is divided into a first elastic member 151 corresponding to the second transmission rod 144, and the rear portion 1443 of the second transmission rod 144 has a front side wall opening to accommodate a second lock seat 152 of the first elastic member 151. The second transmission rod 144 can be slidably inserted into the second lock seat 152, and the limiting member 16 includes a first rear magnet 161 embedded in the rear side wall of the second lock seat 152 and a first front magnet 162 arranged on the rod body of the second transmission rod 144. The first front magnet 162 is spaced apart from the first rear magnet 161, and the polarities of the first rear magnet 161 and the first front magnet 162 are opposite, and one end of the first elastic member 151 abuts against the first rear magnet 161, and the other end abuts against the first front magnet 16 2, the first elastic member 151 makes the first rear magnet 161 and the first front magnet 162 always have a tendency to separate. When the doctor pushes the syringe 21, the corresponding index finger and little finger directly drive the second transmission rod 144 and the third transmission rod 145 to move backward, and then drive the first transmission rod 141 to drive the operating part 22 to move backward, so as to switch the endoscopic injection needle 2 to the needle insertion state. At this time, the second transmission rod 144 is between the first front magnet 162 and the first rear magnet 161. The first elastic member 151 is compressed and is in an energy storage state due to the magnetic attraction between the two. At this time, the second transmission rod 144 does not move, and the first transmission rod 141 also remains stationary. The first transmission rod 141 drives the operating part 22 to be in a backward moving state to keep the endoscopic injection needle 2 in the needle insertion state.Similarly, the elastic member is divided into a second elastic member 153 corresponding to the third transmission rod 145, wherein the rear end portion 1453 of the third transmission rod 145 has a front side wall opening to accommodate a third lock seat 154 of the second elastic member 153, and the third transmission rod 145 can be slidably inserted into the third lock seat 154, and the limiting member 16 includes a second rear magnet 163 embedded in the rear side wall of the third lock seat 154 and a second front magnet 164 arranged on the rod body of the third transmission rod 145, the second front magnet 164 is spaced apart from the second rear magnet 163, and the polarities of the second rear magnet 163 and the second front magnet 164 are opposite, and the second elastic member One end of 153 abuts against the second rear magnet 163, and the other end abuts against the second front magnet 164. The second elastic member 153 makes the second rear magnet 163 and the second front magnet 164 always have a tendency to separate. At this time, the second elastic member 153 of the third transmission rod 145 between the second front magnet 164 and the second rear magnet 163 is compressed and in an energy storage state due to the magnetic attraction between the two. At this time, the third transmission rod 145 does not move, and the first transmission rod 141 also remains stationary. The first transmission rod 141 drives the operating part 22 to be in a backward moving state to keep the endoscopic injection needle 2 in the needle insertion state. Finally, in order to achieve the synchronous movement of the second transmission rod 144 and the third transmission rod 145, the rear portion 1443 of the second transmission rod 144 can pass through the second lock seat 152, and the rear end portion 1453 of the third transmission rod 145 can pass through the third lock seat 154. The rear portion 1443 of the second transmission rod 144 and the rear end portion 1453 of the third transmission rod 145 are connected by the second connecting rod 17. There is also a fixed seat 3 and a fixed rod 4 connecting the second lock seat 152 and the third lock seat 154, and the fixed seat 3 is fixed to the bottom of the main body 11. In order to meet the engineering mechanics of the human body and improve the comfort of the doctor's grip, a sphere 5 that can match the palm of the doctor's hand is provided at the rear portion 1443 of the fixed seat 3 at the bottom of the main body 11.

[0048] The present embodiment also provides an endoscopic injection needle 2 used in conjunction with the endoscopic injection needle holder 1 as described above. The endoscopic injection needle 2 has an insertion portion 23 and an operating portion 22. The insertion portion 23 has an outer tube 231 and an inner tube 232. The inner tube 232 is freely arranged in the outer tube 231 and has a needle body 20 fixed at the front end. The operating portion 22 is fixedly connected to the outer tube 231 to perform needle insertion and needle withdrawal operations on the needle body 20 of the inner tube 232. The distal end of the inner tube 232 is detachably connected to a syringe 21 that can provide liquid medicine to the inner tube 232. The upper surface of the main body 11 has a fixing portion 111 that can fix the distal end of the inner tube 232. At least a portion of the transmission portion 14 is located below the operating portion 22. Through the fixed connection of the main body 11 The setting of the fixed part 111 can make the inner tube 232 of the endoscopic injection needle 2 directly fluidically connected to the injection needle. By fixing the end of the inner tube 232 through the fixed part 111 of the endoscopic injection needle holder 1, it can be achieved by simply pulling the operating part 22 fixedly connected to the outer tube 231, that is, when the doctor pushes the syringe 21, the corresponding finger pulls the holding part 13 and the transmission part 14 is directly triggered to switch the endoscopic injection needle 2 to the needle insertion state. There are many options for the fixing part 111. From the perspective of simple structure, it is a U-shaped bayonet with the opening facing upward. In addition, the fixing part 142 for fixing the operating part 22 is a U-shaped stirrup and a tightening screw for tightening the opening of the U-shaped stirrup; and the fixing part 142 for fixing the syringe 21 can be a buckle structure.

[0049] The process of using the endoscope injection needle holder 1 in conjunction with the endoscope injection needle 2 is as follows: first, the end of the inner tube 232 of the endoscope injection needle 2 is connected to the syringe 21 that can provide liquid medicine to the inner tube 232, and then the end of the inner tube 232 of the endoscope injection needle 2 is fixed to the fixing portion 111 of the main body 11 of the endoscope injection needle holder 1. When the doctor needs to complete the operation of injecting liquid medicine to the disease, he only needs to pass the index finger portion 1321 of the operating finger hole portion 132, the little finger portion 1322 of the operating finger hole portion 132, and the clamping finger hole portion 131 through the index finger portion 1321 of the operating finger hole portion 132, and the little finger portion 1322 of the operating finger hole portion 132, and the ball 5 of the main body 11 is located in the palm of the doctor's hand;

[0050] a. When the doctor needs to inject liquid medicine for the disease, the endoscope injection needle 2 should be in the needle-out state: when the doctor pushes the syringe 21, the corresponding index finger and little finger are directly moved backward by the retracting action, and then the first transmission rod 141 is driven to drive the operating part 22 to move backward, so as to switch the endoscope injection needle 2 to the needle-in state; wherein the index finger part 1321 and the little finger part 1322 can be operated to rotate in a small angle range, such as 2 to 8 degrees, following the retracting action of the index finger and the little finger; when the operation of injecting liquid medicine is completed, only the index finger and the little finger need to be slightly expanded to directly drive the second transmission rod 144 and the third transmission rod 145 to move forward, and then the first transmission rod 141 is driven to drive the operating part 22 to move forward, so as to switch the endoscope injection needle 2 to the needle-out state;

[0051] b. When the doctor needs to inject liquid medicine for a long time, the endoscope injection needle 2 should be kept in the needle-out state: the doctor's corresponding index finger and little finger have a larger closing action, that is, the index finger part 1321 and the little finger part 1322 can follow the closing action of the index finger and the little finger and rotate in a large angle range, such as 9 to 15 degrees; the index finger part 1321 of the operating finger hole part 132 and the little finger part 1322 of the operating finger hole part 132 directly drive the second transmission rod 144 and the third transmission rod 145 to move backwards in response to the closing action of the index finger and the little finger, and then drive the first transmission rod 141 to drive the operating part 22 to move backwards, so as to switch the endoscope injection needle 2 to the needle-in state. At this time, the first elastic member 151 of the second transmission rod 144 between the first front magnet 162 and the first rear magnet 161 is compressed and is in an energy storage state due to the magnetic attraction between the two. At this time, the second transmission rod 144 does not move, and the second elastic member 153 of the third transmission rod 145 between the second front magnet 164 and the second rear magnet 163 is compressed and is in an energy storage state due to the magnetic attraction between the two. At this time, the third transmission rod 145 does not move, so the first transmission rod 141 also remains stationary, and the first transmission rod 141 drives the operating part 22 to be in a backward moving state to keep the endoscopic injection needle 2 in the needle insertion state;

[0052] c. When the doctor does not need to inject liquid medicine for the disease, the endoscopic injection needle 2 should remain in the withdrawn state: the corresponding index finger and little finger can directly drive the second transmission rod 144 and the third transmission rod 145 to move forward under the expansion action, and then under the action of the elastic restoring force of the first elastic member 151 and the second elastic member 153, the first transmission rod 141 drives the operating part 22 to move forward to switch the endoscopic injection needle 2 to the withdrawn state.

[0053] Example 2

[0054] The structure is basically the same as that of the first embodiment, with the only difference being that the fixing member 142 for fixing the operating portion 22 and the fixing portion 111 for fixing the end of the inner tube 232 may be elastic U-shaped stirrups that always have a tendency to reduce the opening.

[0055] Example 3

[0056] The structure is basically the same as that of Example 1, with the only difference being that the control portion 12 is the first finger hole portion 131 located under the main body 11, the abutting portion 13 is the three finger holes of the second finger hole portion 132 through which the middle finger, the ring finger and the little finger pass, and then the index finger passes through the first finger hole portion 132 and while the index finger applies force to the first finger hole portion 131 to pull backward, the thumb pushes the piston rod 211 of the syringe 21 forward, thereby switching the endoscopic injection needle 2 to the needle insertion state to inject the patient with liquid medicine.

Claims

1. An endoscopic injection needle holder, the endoscopic injection needle holder (1) is used in conjunction with an endoscopic injection needle (2), characterized in that: The endoscope injection needle holder (1) comprises: The main body (11) can be held in the doctor's hand and is used to fix the syringe (21) that can provide liquid medicine to the endoscopic injection needle (2); A control unit (12) is configured to be connected to an operating unit (22) capable of controlling the insertion and withdrawal of the endoscopic injection needle (2), the control unit (12) being disposed on the main body (11) and further comprising: a holding portion (13), arranged on the main body (11), for allowing a doctor's finger to abut against and hold the syringe (21); and The transmission part (14) can be directly triggered by the action of the corresponding finger control control part (12) when the doctor pushes the syringe (21) to switch the endoscopic injection needle (2) to the needle insertion state; The holding portion (13) includes a clamping finger hole portion (131) into which the doctor's middle finger and ring finger can be inserted to clamp the syringe (21); the control portion (12) includes an operating finger hole portion (132) into which the doctor's index finger and little finger can be inserted to cooperate with the thumb to push the syringe (21); the operating finger hole portion (132) includes an index finger portion (1321) and a little finger portion (1322) respectively located on the periphery of the clamping finger hole portion (131); the index finger portion (1321) and the little finger portion (1322) can rotate relative to the main body (11); thereby, when the doctor pushes the syringe (21), the operating finger hole portion (132) corresponding to the movement of the index finger and little finger to close the operating finger hole portion (132), and the transmission portion (14) can be directly triggered to switch the endoscopic injection needle (2) to the needle insertion state.

2. The endoscopic injection needle holder according to claim 1, characterized in that: The transmission part (14) comprises: A first transmission rod (141) is arranged along the direction in which the endoscopic injection needle (2) is ejected, and a front end (1412) of the first transmission rod (141) corresponding to the same direction as the needle ejection is provided with a fixing member (142) capable of fixing an operating portion (22) for controlling the insertion and withdrawal of the endoscopic injection needle (2), and a rear end (1411) of the first transmission rod (141) corresponding to the opposite direction of the needle ejection is provided with a guide member (143) capable of limiting the first transmission rod (141) to move only along the insertion or withdrawal direction of the endoscopic injection needle (2), and the guide member (143) is arranged at the bottom of the main body (11); A second transmission rod (144) is also arranged along the direction where the endoscopic injection needle (2) is ejected, and is located downstream of the rear end (1411) of the first transmission rod (141). The front portion (1442) of the second transmission rod (144) has a first pivot point (1441) for the index finger portion (1321) of the operating finger hole portion (132) to rotate. The third transmission rod (145) is also arranged along the direction where the endoscopic injection needle (2) is ejected, and is located downstream of the rear end (1411) of the first transmission rod (141). The third transmission rod (145) and the second transmission rod (144) are arranged side by side on the left and right sides of the first transmission rod (141), respectively. The front end (1452) of the third transmission rod (145) has a second pivot point (1451) for the little finger (1322) of the operating finger hole (132) to rotate. as well as The first connecting rod (146) is arranged perpendicular to the direction in which the endoscopic injection needle (2) is ejected, and is connected to the rear end (1411) of the first transmission rod (141) for connecting the second transmission rod (144) and the third transmission rod (145); thereby, when the doctor pushes the syringe (21), the corresponding index finger and little finger are brought together to directly drive the second transmission rod (144) and the third transmission rod (145) to move backwards, and then drive the first transmission rod (141) to drive the operating part (22) to move backwards, so as to switch the endoscopic injection needle (2) to the needle insertion state.

3. The endoscopic injection needle holder according to claim 2, characterized in that: The control unit (12) further includes: an elastic member, arranged in the main body (11), so that the endoscopic injection needle (2) has a tendency to retract to a needle withdrawal state; as well as A limiting member (16) limits the transmission part (14) when the transmission part (14) is triggered so that the endoscopic injection needle (2) switches to the needle insertion state.

4. The endoscopic injection needle holder according to claim 3, characterized in that: The elastic member is divided into a first elastic member (151) corresponding to the second transmission rod (144), wherein the Second transmission rod The rear portion (1443) of the lever (144) has a front side wall opening for accommodating a second lock seat (152) of the first elastic member (151); the second transmission rod (144) can be slidably inserted into the second lock seat (152); the limiting member (16) comprises a first rear magnet (161) embedded in the rear side wall of the second lock seat (152) and a first front magnet (162) arranged on the rod body of the second transmission rod (144); the first front magnet (162) is spaced apart from the first rear magnet (161); the first rear magnet (161) and the first front magnet (162) have opposite polarities; one end of the first elastic member (151) abuts against the first rear magnet (161) and the other end abuts against the first front magnet (162); the first elastic member (151) causes the first rear magnet (161) and the first front magnet (162) to always have a tendency to separate.

5. The endoscopic injection needle holder according to claim 4, characterized in that: The elastic member is divided into a second elastic member (153) corresponding to the third transmission rod (145), wherein the The third transmission rod The rear end portion (1453) of the second elastic member (153) has a front side wall opening for accommodating a third lock seat (154) of the second elastic member (153). The third transmission rod (145) can be slidably inserted into the third lock seat (154). The limiting member (16) includes a second rear magnet (163) embedded in the rear side wall of the third lock seat (154) and a second front magnet (164) arranged on the rod body of the third transmission rod (145). The second front magnet (164) is spaced apart from the second rear magnet (163). The second rear magnet (163) and the second front magnet (164) have opposite polarities. One end of the second elastic member (153) abuts against the second rear magnet (163) and the other end abuts against the second front magnet (164). The second elastic member (153) causes the second rear magnet (163) and the second front magnet (164) to always have a tendency to separate.

6. The endoscopic injection needle holder according to claim 5, characterized in that: The rear portion (1443) of the second transmission rod (144) can pass through the second lock seat (152), and the rear end portion (1453) of the third transmission rod (145) can pass through the third lock seat (154). The rear portion (1443) of the second transmission rod (144) and the rear end portion (1453) of the third transmission rod (145) are connected via a second connecting rod (17).

7. The endoscopic injection needle holder according to claim 6, characterized in that: A fixing seat (3) and a fixing rod (4) connecting the second locking seat (152) and the third locking seat (154) are provided between the two, and the fixing seat (3) is fixed to the bottom of the main body (11).

8. The endoscopic injection needle holder according to claim 7, characterized in that: The bottom of the main body (11) is provided with a spherical body (5) at the rear part (1443) of the fixing seat (3) which can match the palm of the doctor's hand.

9. An endoscopic injection needle using a needle holder according to any one of claims 1 to 8, the endoscopic injection needle (2) comprising an insertion portion (23) and an operating portion (22), the insertion portion (23) comprising an outer tube (231) and an inner tube (232), the inner tube (232) being freely arranged in the outer tube (231) and having a needle body (20) fixed at the front end, the operating portion (22) being fixedly connected to the outer tube (231) to perform needle insertion and needle withdrawal operations of the needle body (20) of the inner tube (232), the distal end of the inner tube (232) being detachably connected to a syringe (21) capable of supplying a drug solution to the inner tube (232), characterized in that: The upper surface of the main body (11) has a fixing portion (111) capable of fixing the end of the inner tube (232), and at least a part of the transmission portion (14) is located below the operating portion (22).

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