Biopsy sample sampling device for oncology cliniciansTechnical Field
The invention relates to the technical field of medical auxiliary instruments, in particular to a biopsy sample sampling device for oncology clinicians.
Background
Tumor biopsy is to take out a small amount of tissue from the tumor part of a patient (according to different conditions, forceps, cutting, excision, puncture suction and other methods) to prepare pathological sections, observe the forms of tumor cells and tissue structures under a microscope to determine the properties, histological types, differentiation degree and the like of the tumor, thereby providing reliable basis for clinical treatment.
Among them, the puncture sampling is the most common sampling and examination mode in the biopsy process, in the puncture process, a puncture needle or a puncture gun is generally used, a sampling needle head is punctured to a tumor part under the guidance of CT or B ultrasonic, then the resected tumor tissue is brought out of the body by utilizing a sampling groove on the sampling needle head, and when the tumor tissue is resected, the current puncture needle can drive the movement of sampling the tissue around the tumor, thereby increasing the pain feeling of a patient and generating discomfort, therefore, we propose a biopsy sample sampling device to solve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a biopsy sample sampling device for oncology clinicians.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the biopsy sample sampling device for the oncology clinician comprises a grab handle, a needle cylinder, a sampling needle head and a piston needle head, wherein a push-type switch and a knob are respectively arranged on the grab handle;
the piston needle slides on the surface of one side of sampling needle, and is equipped with the blade on its tip, and piston needle elastic sliding has inlayed tooth's socket strip on its one side lateral wall that keeps away from sampling needle, one side meshing of tooth's socket strip has the external gear, the centre of external gear is equipped with the internal gear, one side still meshing of internal gear is provided with the rack, the rack slides along the inner wall in sampling cavity and sets up, and one side of rack is connected with the connecting rod, the other end activity of connecting rod is in the grab handle, install adjusting gear through the knob rotation in the grab handle, adjusting gear and connecting rod are also meshed and are connected.
Through adopting above-mentioned technical scheme, utilize the sampling syringe needle to move outward and stab in the sample tissue, the piston syringe needle that the rethread launched out cuts off sample tissue and remains wherein, finally, is taken out along with the cylinder of taking out, has avoided the painful sense that causes because of the sample syringe needle drives sample tissue around tearing when withdrawing outward conventionally.
As a preferable technical scheme of the invention, the knob and the adjusting gear are fixedly connected through a shaft, and the connecting rod is provided with a first tooth slot meshed with the adjusting gear.
As a preferable technical scheme of the invention, a second tooth slot meshed with the internal gear is also arranged on the side wall of the connecting rod close to the other end of the connecting rod.
By adopting the technical scheme, the movement of the piston needle in the puncture part can be controlled at the outer side grab handle end, so that the operation is more convenient.
As a preferable embodiment of the present invention, the rack slides between inner walls of the external gear.
By adopting the technical scheme, the functions that the internal gear drives the external gear to rotate and the external gear drives the piston needle to compress the spring and perform ejection can be effectively realized.
As a preferable technical scheme of the invention, the switch is electrically connected with the electric push rod.
As a preferable technical scheme of the invention, the inner wall of the sampling cavity is welded with a fixing piece, a piston rod penetrates through the fixing piece, one end of the piston rod is of a sphere structure, and the other end of the piston rod is fixedly connected with one end of a piston needle.
As a preferable technical scheme of the invention, the piston rod is sleeved with a spring, the spring is welded on the side wall of the fixing piece and is contacted with the end wall of the piston needle, and the connecting rod penetrates through the fixing piece and is in sliding contact with the fixing piece.
As a preferable technical scheme of the invention, the end part of the sampling needle is also provided with a blade groove matched with the blade, and the blade groove is arranged opposite to the piston needle.
Through adopting above-mentioned technical scheme, when the external gear drive piston syringe needle to being close to the one side of stationary blade and remove, extrude the spring of this side, and when the tooth on the external gear did not contact with the tooth's socket strip, the piston syringe needle at this moment was sprung to the one side that the sampling syringe needle tip was located under the effect of spring to cut off the sample tissue and remain in its and the space between the sampling syringe needle, so as to realize the function of sampling.
As a preferable technical scheme of the invention, a distance sensor is embedded in the end wall of one end of the piston needle, and the distance sensor is connected with the electric push rod through an electric signal.
As a preferable technical scheme of the invention, the plane of the end surface of the blade and the plane of the end surface of the blade groove are parallel to each other.
Through adopting above-mentioned technical scheme, when the sample syringe needle moved backward, driven the synchronous back of piston syringe needle and moved, and when the tip and the stationary blade contact of piston syringe needle, distance sensor was triggered, at this moment, electric putter then stopped to drive the sample syringe needle and continue to move backward, simultaneously, also made the piston syringe needle at this moment move back to the department that resets just.
The beneficial effects of the invention are as follows:
through setting up piston syringe needle and sample syringe needle in the needle cylinder, both are supporting, set up the blade on the piston syringe needle, utilize catapulting power control piston syringe needle's motion for the blade stores the biopsy sample that cuts down between piston syringe needle and sample syringe needle, and is taken in-vivo along with the needle cylinder after moving outward, has avoided when excision tumour sample because of driving the tissue around the biopsy sample and has pulled the painful sense that produces the patient, and has improved excision tumour tissue's efficiency.
Drawings
FIG. 1 is a schematic diagram of a biopsy sample sampling device for oncology clinicians according to the present invention;
FIG. 2 is a schematic illustration of the installation of a piston needle and sampling needle of a biopsy sample sampling device for oncology clinicians in accordance with the present invention;
FIG. 3 is a schematic illustration of the connection of the adjusting gear and the connecting rod of the biopsy sample sampling device for oncology clinicians according to the present invention;
fig. 4 is a schematic diagram of the connection between the external gear and the internal gear of the biopsy sample sampling device for oncology clinicians and the tooth slot bars and racks.
In the figure: 1. a grab handle; 2. a switch; 3. a knob; 31. an adjusting gear; 4. a needle cylinder; 41. a sampling cavity; 42. a fixing piece; 5. a piston needle; 51. tooth slot strips; 52. a piston rod; 53. a blade; 6. a sampling needle; 61. an electric push rod; 62. a blade slot; 7. a connecting rod; 8. a rack; 9. an external gear; 91. an internal gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 4, a biopsy sample sampling device for oncology clinicians comprises a grab handle 1, a needle cylinder 4, a sampling needle head 6 and a piston needle head 5, wherein a push-type switch 2 and a knob 3 are respectively arranged on the grab handle 1, the needle cylinder 4 is arranged on the grab handle 1, one side of the interior of the needle cylinder is provided with a sampling cavity 41, an electric push rod 61 is further arranged on the inner wall of one side of the interior of the needle cylinder through a screw, the sampling needle head 6 is inserted into the output end of the electric push rod 61, the end part of the sampling needle head is in a pointed structure, and the switch 2 is electrically connected with the electric push rod 61;
the piston needle 5 slides on one side surface of the sampling needle 6, a blade 53 is inserted on the end part of the piston needle 5, the piston needle 5 elastically slides in the sampling cavity 41, a fixing piece 42 is welded on the inner wall of the sampling cavity 41, a piston rod 52 penetrates through the fixing piece 42, one end of the piston rod 52 is in a sphere structure, the other end of the piston rod is fixedly connected with one end of the piston needle 5, a spring is sleeved on the piston rod 52, the spring is welded on the side wall of the fixing piece 42 and is contacted with the end wall of the piston needle 5, and a connecting rod 7 penetrates through the fixing piece 42 and is in sliding contact with the fixing piece 42;
by adopting the technical scheme, the piston needle 5 extrudes the spring to one side, so that potential energy is accumulated by the spring, and when the external gear 9 is not meshed with the tooth socket strip 51, the spring exerts elasticity to launch the piston needle 5 to one side of the sampling needle 6;
a tooth slot strip 51 is fixedly embedded in the side wall of one side of the piston needle head 5 far away from the sampling needle head 6, an external gear 9 is meshed with one side of the tooth slot strip 51, the tooth slot strip 51 and the external gear 9 are arranged in a tangential mode (namely, when the tooth slot strip 51 contacts with a part of the external gear 9, the tooth slot strip 51 and the external gear are in tangential motion), an internal gear 91 is arranged in the middle of the external gear 9, a rack 8 is meshed with one side of the internal gear 91, the rack 8 is arranged for controlling the internal gear 91 to rotate so as to drive the external gear 9 to synchronously rotate, the rack 8 is arranged in a sliding mode along the inner wall of the sampling cavity 41, one side of the rack 8 is connected with a connecting rod 7 which is bonded into a whole, and the other end of the connecting rod 7 moves in the grab handle 1;
in order to guide and limit the rack 8 and avoid the problems of blocking the movement of the external gear 9, the rack 8 is controlled to slide between the inner walls of the external gear 9;
in order to be able to control the ejection movement of the piston needle 5 outside the penetration, the following is provided:
an adjusting gear 31 is rotatably arranged in the grab handle 1 through a knob 3, the adjusting gear 31 is arranged to drive a connecting rod 7 to reciprocate, so that the connecting rod 7 drives a rack 8 to move and adjust, the adjusting gear 31 is also meshed and connected with the connecting rod 7, the knob 3 is fixedly connected with the adjusting gear 31 through a shaft, a first tooth slot meshed with the adjusting gear 31 is formed in the connecting rod 7, and a second tooth slot meshed with an internal gear 91 is formed in the side wall, close to the other end, of the connecting rod 7;
in order to know the moving state of the piston needle 5 more conveniently, the knob 3 can make a click sound after the adjusting gear 31 and the connecting rod 7 are meshed with each tooth and each tooth slot by rotating the knob 3 so as to prompt an operator;
the end of the sampling needle 6 is further provided with a blade 53 groove matched with the blade 53, the blade 53 groove is opposite to the piston needle 5, and the plane of the end surface of the blade 53 is parallel to the plane of the end surface of the blade groove 62.
When the sampling needle 6 moves back, the piston needle 5 contacted with the sampling needle is driven to move synchronously, and in order to control the position of the piston needle 5 after moving back, a distance sensor is embedded on the end wall of one end of the piston needle 5, the set value of the distance sensor is the length of the spring in a relaxed state, the distance sensor is connected with the electric push rod 61 through an electric signal, and when the piston needle 5 moves to the end part of the spring in the relaxed state to contact, the distance sensor is triggered, and the electric push rod 61 stops at the moment.
Working principle:
firstly, the switch 2 is pressed down, the electric push rod 61 is started, the sampling needle head 6 is automatically suspended after being extended to the farthest position, then, the sampling needle head 6 is penetrated into a patient body under the guidance of CT or B ultrasonic and slowly moved to a tumor part, and the operation is stopped after the penetration;
next, the knob 3 is rotated to drive the adjusting gear 31 to rotate, so that the connecting rod 7 is driven to move to the right side as shown in fig. 2, the rack 8 is driven to move synchronously, the internal gear 91 is driven to rotate clockwise along with the movement of the rack 8, the external gear 9 is driven to rotate along with the rack, the piston needle 5 is driven to move to the left side as shown in fig. 2 through the engagement with the tooth groove strip 51, the spring on one side is compressed, after 5-sound 'click' is rotated, the knob 3 is stopped to rotate, the spring at the moment is in a compressed state, and only one tooth is meshed between the external gear 9 and the tooth groove strip 51;
subsequently, the knob 3 is turned again in a click manner, so that the external gear 9 and the tooth groove strip 51 rotate through the last meshed tooth and tooth groove, the spring applies elastic force to the piston needle 5 at the moment, the spring ejects the piston needle 5, the blade 53 on the end is utilized to cut off the tumor tissue, the blade 53 is inserted into the blade groove 62, and the cut tumor tissue is remained between the piston needle 5 and the sampling needle 6;
after sampling, the switch 2 is pressed down again, so that the electric push rod 61 drives the sampling needle 6 to move back, at this time, the sampling needle 6 also synchronously drives the blade 53 and the piston needle 5 to move together, when the piston needle 5 moves to be in contact with the end of the spring in a loose state, the distance sensor is triggered, the electric push rod 61 stops immediately, the sampling needle 6 still stays outside the syringe 4 at this time, then the knob 3 continues to rotate, so that the external gear 9 continues to rotate until the external gear is in contact with the tooth slot on the tooth slot strip 51 which moves back (namely, resistance is obviously felt when rotating), the syringe 4 is taken out, after taking out, the knob 3 continues to rotate again, so that the piston needle 5 compresses the spring again, so that sampled tumor tissue is exposed, after the exposed part, the knob 3 stops rotating, then the tumor tissue is moved into the sample tube by forceps, and the sampler is sterilized.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.