CN115553830B - Tumor safety sampling device - Google Patents

Abstract

The invention discloses a tumor safe sampling device, which comprises a pressing driving device and a safe sampling device; the sampling device comprises a sampling driving mechanism, a safety protection mechanism and a sampling buffer mechanism; the pressing driving device is arranged at the top of the sampling driving mechanism; the sampling driving mechanism is inserted into the safety protection mechanism; the sampling buffer mechanism is arranged in the safety protection mechanism and is connected with the sampling driving mechanism; the needle at the bottom of the sampling buffer mechanism extends out of the inner cavity of the safety protection mechanism. The sampling driving mechanism is flexibly controlled by the pressing driving assembly; the sampling driving mechanism is buckled and installed with the top of the sampling buffer mechanism in a buckling installation mode, so that the connection is stable; the sampling buffer mechanism is arranged in the safety protection mechanism and is used for extracting a tumor sample; the sampling buffer mechanism is also internally provided with a contraction component for secondary protection, so that the tumor sample taken out by the needle head is prevented from polluting the outside; the whole device is convenient to operate and good in protection effect.

Description

A safe tumor sampling device

Technical field

The present invention relates to the technical field of tumor sampling, and in particular to a safe tumor sampling device.

Background technique

Oncology, like internal medicine, surgery, obstetrics and gynecology, and pediatrics, is a secondary discipline of clinical medicine. It is divided into medical oncology, radiotherapy oncology, and surgical oncology. Medical oncology is mainly engaged in the medical treatment of various benign and malignant tumors; The Department of Oncology and Radiation Therapy is mainly engaged in radiation therapy for tumors; the Department of Oncology Surgery provides comprehensive treatment based on surgery. The relevant departments of specialized cancer hospitals will be subdivided according to different parts, such as gastrointestinal oncology and lymphoma oncology in the medical oncology department; breast surgery, head and neck surgery, thoracic surgery, gynecological oncology, abdominal surgery, etc. in the surgical oncology department. The treatment of tumors has entered the era of comprehensive treatment. Clinical practice has proved that it is often difficult to achieve the best results using any single treatment method at this stage. Therefore, except for some early-stage tumors and a few special types of tumors, the treatment principle for most tumors is comprehensive treatment. The concept of comprehensive treatment is to apply existing treatment methods in a planned and reasonable manner based on the patient's physical condition, pathological type of tumor, extent of invasion (disease stage) and development trend, in order to significantly improve the cure rate of the tumor and prolong the treatment period. survival period and improve patient quality of life.

In the current medical oncology treatment process, tumor biopsy must be sampled; the existing tumor sampling device is inconvenient to operate during sampling and difficult to cut. It is troublesome, time-consuming and labor-intensive to operate when performing tumor biopsy cutting on patients, and increases the cost. It makes the work of medical staff more difficult, and the samples taken out include not only tumor cells, but also part of epidermis and muscle tissue, which has a certain impact on the purity of the samples. Moreover, the existing sampling equipment has been used multiple times, causing inconsistencies between users. risk of mutual infection.

Therefore, there is an urgent need to design a safe tumor sampling device with good protective effect.

Contents of the invention

The purpose of the present invention is to provide a safe tumor sampling device to solve the above-mentioned problems existing in the prior art.

In order to achieve the above object, the present invention provides the following solution: The present invention provides a tumor safety sampling device, which includes: a pressing driving device and a safety sampling device; the sampling device includes a sampling driving mechanism, a safety protection mechanism and a sampling caching mechanism; The pressing driving device is installed on the top of the sampling driving mechanism; the sampling driving mechanism is inserted into the safety protection mechanism; the sampling caching mechanism is placed in the safety protection mechanism, and the sampling caching mechanism is connected to the safety protection mechanism. The sampling drive mechanism is connected; the needle at the bottom of the sampling buffer mechanism extends out of the inner cavity of the safety protection mechanism.

The pressing driving device includes a pressing handle, and the pressing handle includes an operating part and a pressing grabbing part; the operating part includes a weight and a pressing key; one end of the first operating rod is fixedly connected to the pressing key; The other end of the first operating rod extends into the operating part and is transmission connected with the second operating rod that presses the grabbing part through a transmission rod;

A first limiting ring and a second limiting ring are respectively formed on the middle part of the side wall of the first operating lever and the middle part of the side wall of the second operating lever; a third limiting ring is installed between the first limiting ring and the pressing key. An elastic member; the first elastic member is sleeved on the first operating rod; the end of the first operating rod is rotationally connected to one end of the transmission rod through a rotating shaft; the pressing handle is also provided with a movable groove; a sliding rod is fixedly installed in the middle of the transmission rod; the sliding rod is slidably arranged in the movable groove and is used to adjust the transmission center of the transmission rod; the other end of the transmission rod is connected to the rotating shaft through the rotating shaft. One end of the second operating rod is rotatably connected; the other end of the second operating rod is inserted into the sampling driving mechanism and is fixedly connected to the sampling driving mechanism.

One side wall of the pressing and grabbing part also extends outward to form a plug-in wall; the plug-in wall is a hollow cylindrical structure; the movable side of the plug-in wall is inserted into the sampling drive mechanism; pressing A grabbing groove is formed on the side wall of the grabbing portion extending inward; the diameter of the opening of the grabbing groove is smaller than the diameter of the second limiting ring; the second operating rod extends out of the grabbing groove, and the A plurality of plug-in rods are fixedly installed at the extended end of the second operating rod; a ball hinge is installed at the movable end of the plug-in rod.

The sampling drive mechanism includes a first housing; the top of the first housing forms an annular plug slot that matches the plug wall; the first housing is hollow inside; the bottom of the first housing faces An adjustment slot is formed in the inner recess; a mounting hole is provided in the center of the bottom surface of the adjustment slot, and the mounting hole extends upward through the center of the top surface of the first housing; a first driving member is provided on the top of the first housing; The top surface of the first driving member is provided with a fixing groove downward; the bottom surface of the fixing groove extends downward to form a ball hinge groove adapted to the insertion rod;

A threaded groove is provided in the center of the bottom surface of the first driving part; a second driving part is installed in the threaded groove of the first driving part.

The second driving member includes a first connecting rod; the top of the first connecting rod is threadedly connected to the first driving member, and the bottom of the first connecting rod extends out of the mounting hole and is fixedly installed with a second connecting rod. ; The wall of the second connecting rod gradually increases from top to bottom, and the interior of the second connecting rod is hollow; one end of the bottom surface of the second connecting rod protrudes downward to form a sharp protrusion; the second connecting rod A hollow groove is opened inward on the other side of the bottom surface, and the hollow groove is connected with the inner cavity of the second connecting rod; a first support plate is formed at the intersection surface of the sharp protrusion and the hollow groove; the first support plate is formed on the other side of the bottom surface. One end of the semicircular plate is fixedly connected to the movable end of the support plate; a second support plate is fixedly installed on the other end of the semicircular plate; the second support plate, the semicircular plate and the first support plate connect the inner cavity of the second connecting rod It is divided into a first inner cavity and a second inner cavity; an arc-shaped chute is provided in the middle of the peripheral wall of the semi-circular plate; a semi-circular block is provided inside the semi-circular plate; a restoration block is fixedly installed at one end of the outer wall of the semi-circular block; the restoration block The block is slidably arranged in the arcuate chute, and the restoration block penetrates the inner wall of the second connecting rod and is placed in the adjustment groove; the outer wall of the second connecting rod is provided with a position corresponding to the arcuate chute. Corresponding through-groove; the adjustment groove is provided with a recessed area relative to the position of the restoration block; one end of the second elastic member is installed in the middle of the restoration block; the second elastic member penetrates the first inner cavity The second inner cavity is fixedly installed in the middle part of the inner wall of the second connecting rod.

The sampling caching mechanism includes a first driven member plugged into the second driving member; the first driven member includes the sharp protrusion with the same structure as the second driving member, and the first support plate , the second support plate, the semicircular plate and the semicircular block; the second driving member and the first driven member are symmetrical about the center of the intersection of the two first supporting plates; one end of the outer wall of the semicircular block of the first driven member A driven block is fixedly installed; the outer wall of the first driven piece is provided with a through groove corresponding to the position of the arc-shaped chute, and the driven block is placed in the through groove; a third driven block is installed in the middle of the driven block. One end of the three elastic members; the third elastic member is fixedly installed in the middle of the inner wall of the first follower;

The second follower is fixedly installed at the bottom of the first follower; an outer sampling tube is installed at the connection between the first follower and the second follower; an annular plate is fixedly installed at the top of the outer wall of the outer sampling tube; An annular groove is opened upward at the bottom of the annular plate; a plurality of fourth elastic members are installed at equal intervals on the bottom surface of the annular groove; the movable ends of the fourth elastic members are equipped with movable blocks; the movable blocks are limited to the In the annular groove; the movable block corresponds to the position of the support ring of the safety protection mechanism.

The bottom surface of the outer sampling tube is hollow, and a number of inner protrusions are formed on the bottom surface of the outer sampling tube; the second follower is placed inside the outer sampling tube, and the bottom of the second follower is installed with Safety isolation component; a buffer cavity is provided in the second follower.

The safety isolation assembly includes a limiting block and an inner sampling cylinder; the top of the inner sampling cylinder is installed on the bottom of the second follower through a limiting block; at least one set of shrink components is installed on the outer wall of the inner sampling cylinder; each The shrinkage assembly includes two shrinkage members and two mounting seats; the two shrinkage members are respectively mounted on the mounting bases through rotation of the rotating shaft; and the two shrinkage members are symmetrical about the center of the inner sampling tube;

The shrinking member includes a hook body part and an inclined part; one end of the hook body part and one end of the inclined part are respectively rotatably installed on both sides of the rotating shaft; the hook body part is placed below the inclined part; the top end of the inclined part passes through the third Five elastic members are elastically connected to the top of the inner sampling tube; when the bottom of the hook body is set horizontally, it is flush with the inner end of the inner protrusion; a chassis is supported on the inside of several hook bodies; the chassis cover is provided At the bottom of the sleeve; the sleeve includes several sequentially stacked collars; the top of the sleeve is installed on the bottom surface of the inner sampling tube; guide rings are also installed on both ends of the inner side of the sleeve; the guide A guide hole is provided in the center of the ring; a perforation is provided in the center of the bottom surface of the inner sampling tube and the center of the chassis; the needle installed on the bottom surface of the inner sampling tube is placed on the same axis as the guide ring and the perforation hole.

The safety protection mechanism also includes a second housing; a support platform is fixedly installed on the inner wall of the second housing; the support ring is installed on the top of the support platform; the cross-sectional area of the support ring is smaller than the movable block.

A rubber sleeve in contact with the outer sampling tube is installed at the bottom of the second housing.

The invention discloses the following technical effects: the application flexibly controls the sampling drive mechanism by pressing the drive component; the sampling drive mechanism is buckled and installed with the top of the sampling cache mechanism through snap installation, and the connection is stable; the sampling cache mechanism is placed in the safety protection mechanism , extract the tumor sample; the sampling cache mechanism is also equipped with a shrinking component for secondary protection to prevent the tumor sample taken out by the needle from contaminating the outside world; the entire device is easy to operate and has good protection effect.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the overall structure;

Figure 2 is a schematic structural diagram of the pressing drive device;

Figure 3 is a schematic structural diagram of the safety sampling device;

Figure 4 is an enlarged view of the structure at point A in Figure 3;

Among them, 1. Press driving device; 2. Sampling driving mechanism; 3. Safety protection mechanism; 4. Sampling buffer mechanism; 5. Needle; 6. External sampling tube; 7. Rubber sleeve; 11. Pressing handle; 12. Counterweight. block; 13. Press key; 14. First operating lever; 15. Transmission lever; 16. Second operating lever; 17. First limit ring; 18. Second limit ring; 19. First elastic member; 110 , movable groove; 111, sliding rod; 112, plug-in wall; 113, plug-in rod; 21, first shell; 22, annular plug-in slot; 23, adjustment slot; 24, first driving member; 25, fixed groove; 26. Ball hinge groove; 27. Second driving member; 31. Second connecting rod; 32. Sharp protrusion; 33. First support plate; 34. Semi-circular plate; 35. Second support plate; 36. Arc 37. Semicircular block; 38. Restoring block; 39. Through groove; 310. Second elastic member; 311. First connecting rod; 41. First driven member; 42. Followed block; 43. Three elastic parts; 44. Second driven part; 45. Annular plate; 46. Annular groove; 47. Fourth elastic part; 48. Movable block; 61. Inner protrusion; 62. Limiting block; 63. Inner sampling Barrel; 64. Mounting seat; 65. Fifth elastic member; 66. Chassis; 67. Connecting sleeve; 68. Guide ring; 71. Support ring; 72. Second shell; 73. Support platform.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The invention provides a tumor safety sampling device, which includes: a pressing driving device 1 and a safety sampling device; the sampling device includes a sampling driving mechanism 2, a safety protection mechanism 3 and a sampling caching mechanism 4; the pressing driving device 1 is installed on the top of the sampling driving mechanism 2 ; The sampling driving mechanism 2 is inserted into the safety protection mechanism 3; the sampling caching mechanism 4 is placed in the safety protection mechanism 3, and the sampling caching mechanism 4 is connected to the sampling driving mechanism 2; the needle 5 at the bottom of the sampling caching mechanism 4 extends out of the safety protection Mechanism 3 inner chamber.

The pressing drive device 1 includes a pressing handle 11, and the pressing handle 11 includes an operating part and a pressing grabbing part; the operating part includes a counterweight 12 and a pressing key 13; one end of the first operating rod 14 is fixedly connected to the pressing key 13; The other end of the operating rod 14 extends into the operating part and is transmission connected with the second operating rod 16 that presses the grabbing part through the transmission rod 15;

A first limiting ring 17 and a second limiting ring 18 are respectively formed on the middle part of the side wall of the first operating lever 14 and the middle part of the side wall of the second operating lever 16; a third limiting ring 17 and a second limiting ring 18 are installed between the first limiting ring 17 and the pressing key 13. An elastic member 19; the first elastic member 19 is sleeved on the first operating rod 14; the end of the first operating rod 14 is rotationally connected to one end of the transmission rod 15 through a rotating shaft; the pressing handle 11 is also provided with a movable groove 110; the transmission A sliding rod 111 is fixedly installed in the middle of the rod 15; the sliding rod 111 is slidably installed in the movable groove 110 and is used to adjust the transmission center of the transmission rod 15; the other end of the transmission rod 15 is rotationally connected to one end of the second operating rod 16 through a rotating shaft; The other ends of the two operating rods 16 are inserted into the sampling drive mechanism 2 and are fixedly connected with the sampling drive mechanism 2 .

One side wall of the pressing and grabbing part also extends outward to form a plug-in wall 112; the plug-in wall 112 is a hollow cylindrical structure; the movable side of the plug-in wall 112 is inserted into the sampling drive mechanism 2; the pressing and grabbing part side The wall extends inward to form a grabbing groove; the diameter of the notch of the grabbing groove is smaller than the diameter of the second limiting ring 18; the second operating rod 16 extends out of the grabbing groove, and the extended end of the second operating rod 16 is fixedly installed with Several plug-in rods 113; the movable ends of the plug-in rods 113 are equipped with ball hinges.

In one embodiment of the present invention, the application is installed by cooperating the pressing grabbing part of the pressing driving device 1 with the first housing 221 of the sampling driving mechanism. First, through the annular connection between the plug wall 112 and the top surface of the first housing 21 The insertion slot 22 cooperates to realize the positioning between the two devices, and at the same time, the ball hinge at the movable end of the insertion rod 113 extends into the ball hinge slot 26 to realize the matching installation of the two; then the staff holds the pressing handle 11 with the palm of the hand, Partially squeeze the pressing key 13 with your finger; the pressing key 13 is squeezed and moves upward. At this time, the first operating lever 14 is pushed upward; the height of the first movable lever 14 and the second operating lever 16 is adjusted with the sliding rod 111 as the center of rotation. , thereby realizing the second operating lever 16 to lift the sampling drive mechanism 2 .

Furthermore, the first elastic member 19 is used to reset the first movable rod 14 .

Furthermore, the counterweight is to balance the weight of the pressing drive part, so that the staff can ensure balance at both ends when holding the pressing handle 11.

The sampling drive mechanism 2 includes a first housing 21; the top of the first housing 21 forms an annular plug-in slot 22 that matches the plug-in wall 112; the first housing 21 is hollow inside; the bottom of the first housing 21 is formed by an inward recess. There is an adjustment groove 23; a mounting hole is opened in the center of the bottom surface of the adjustment groove 23, and the mounting hole extends upward through the center of the top surface of the first housing 21; a first driving member 24 is provided on the top of the first housing 21; the top of the first driving member 24 faces A fixing slot 25 is provided at the bottom; the bottom of the fixing slot 25 extends downward to form a fixing slot 25 that matches the insertion rod 113; the bottom of the fixing slot 25 extends downward to form a ball hinge groove 26;

A threaded groove is formed in the center of the bottom surface of the first driving part 24; a second driving part 27 is installed in the threaded groove of the first driving part 24.

The second driving member 27 includes a first connecting rod 311; the top of the first connecting rod 311 is threadedly connected to the first driving member 24, and the bottom of the first connecting rod 311 extends out of the mounting hole and is fixedly installed with the second connecting rod 31; The wall of the rod 31 gradually increases from top to bottom, and the second connecting rod 31 is hollow inside; one end of the bottom surface of the second connecting rod 31 protrudes downward to form a sharp protrusion 32; the other side of the bottom surface of the second connecting rod 31 opens inward. There is a hollow groove, and the hollow groove is connected with the inner cavity of the second connecting rod 31; the intersection surface of the sharp protrusion 32 and the hollow groove forms a first support plate 33; the movable end of the first support plate 33 is fixedly connected to one end of the semicircular plate 34; A second support plate 35 is fixedly installed on the other end of the semicircular plate 34; the second support plate 35, the semicircular plate 34 and the first support plate 33 separate the inner cavity of the second connecting rod 31 into a first inner cavity and a second inner cavity; An arc chute 36 is provided in the middle of the peripheral wall of the semi-circular plate 34; a semi-circular block 37 is provided in the semi-circular plate 34; a restoration block 38 is fixedly installed on one end of the outer wall of the semi-circular block 37; the restoration block 38 is slidably arranged in the arc-shaped chute 36 and restored. The block 38 penetrates the inner wall of the second connecting rod 31 and is placed in the adjusting groove 23; the outer wall of the second connecting rod 31 is provided with a through groove 39 corresponding to the position of the arc chute 36; the adjusting groove 23 is provided with a through groove 39 corresponding to the position of the restoring block 38. The recessed area; one end of the second elastic member 310 is installed in the middle of the restoration block 38; the second elastic member 310 penetrates the first inner cavity and the second inner cavity and is fixedly installed in the middle of the inner wall of the second connecting rod 31.

In one embodiment of the present invention, the first driving member 24 is threadedly connected to the first connecting rod 311 of the second driving member 27; one end of the first connecting rod 311 extends into the adjustment groove 23 and is connected to the second connecting rod 31; The second connecting rod 31 is separated from both sides of its inner cavity by the second support plate 35, the semicircular plate 34 and the first support plate 33, and the semicircular block 37 in the arcuate chute 36 rotates along the arcuate chute 36;

Further, when the second connecting rod 31 and the first driven part 41 are assembled and engaged, the sharp protrusions 32 on the second connecting rod 31 and the first driven part 41 in the vertical direction are inserted into each other's second inner parts. cavity; during the insertion process, the sharp protrusion 32 will contact the semicircular block 37 (or driven block 42), pushing the semicircular block 37 to rotate in the arcuate chute 36; at this time, the restoring block 38 will follow the semicircular block 37 (or driven block 42). The moving block 42) makes an arcuate motion; before the second connecting rod 31 and the first driven member 41 are assembled and fastened, the end faces of the semicircular block 37 and the driven block 42 are parallel to the second support plate 35; When the second connecting rod 31 and the first driven member 41 are assembled and fastened, the semicircular block 37 and the driven block 42 return to their unfastened angles, and the two restoring blocks 38 return to their initial positions.

Further, the third elastic member 43 and the second elastic member 310 are respectively used to restore the positions of the two restoration blocks 38.

The sampling caching mechanism 4 includes a first driven member 41 plugged into the second driving member 27; the first driven member 41 includes a sharp protrusion 32 with the same structure as the second driving member 27, a first support plate 33, a second The support plate 35, the semicircular plate 34 and the semicircular block 37; the second driving member 27 and the first driven member 41 are symmetrical about the center of the intersection of the two first supporting plates 33; one end of the outer wall of the semicircular block 37 of the first driven member 41 is fixed A driven block 42 is installed; the outer wall of the first driven piece 41 is provided with a through groove 39 corresponding to the position of the arc chute 36, and the driven block 42 is placed in the through groove 39; a third elastic is installed in the middle of the driven block 42 One end of the member 43; the third elastic member 43 is fixedly installed in the middle of the inner wall of the first follower 41;

The second follower 44 is fixedly installed at the bottom of the first follower 41; the outer sampling tube 6 is installed at the connection between the first follower 41 and the second follower 44; an annular plate 45 is fixedly installed at the top of the outer wall of the outer sampling tube 6 ; An annular groove 46 is provided upward at the bottom of the annular plate 45; a plurality of fourth elastic members 47 are installed at equal intervals on the bottom surface of the annular groove 46; the movable ends of the fourth elastic members 47 are equipped with movable blocks 48; the movable blocks 48 are limited to the annular groove 46; the movable block 48 corresponds to the position of the support ring 71 of the safety protection mechanism 3.

In one embodiment of the present invention, the middle portion of the outer wall of the first housing 21 shrinks inward to form a closing surface, and the curvature of the outer wall of the first housing 21 is the same as the curvature of the inner wall of the second housing 72 .

The bottom surface of the outer sampling tube 6 is hollow, and a number of inner protrusions 61 are formed on the bottom surface of the outer sampling tube 6; the second follower 44 is placed in the outer sampling tube 6, and a safety isolation component is installed at the bottom of the second follower 44; A buffer cavity is provided in the second follower 44 .

The safety isolation assembly includes a limit block 62 and an inner sampling cylinder 63; the top of the inner sampling cylinder 63 is installed at the bottom of the second follower 44 through the limit block 62; at least one set of shrinkage components is installed on the outer wall of the inner sampling cylinder 63; each set of shrinkage components The assembly includes two shrinking parts and two mounting seats 64; the two shrinking parts are respectively installed on the mounting seats 64 through rotation of the rotating shaft; and the two shrinking parts are symmetrical about the center of the inner sampling tube 63;

The shrinking part includes a hook body part and an inclined part; one end of the hook body part and one end of the inclined part are rotatably installed on both sides of the rotating shaft respectively; the hook body part is placed below the inclined part; the top end of the inclined part passes through the fifth elastic member 65 and the top of the inner sampling tube 63 Elastic connection; when the bottom of the hook body is set horizontally, it is flush with the inner end of the inner protrusion 61; several hook bodies are supported on the inside by chassis 66; the chassis 66 is covered at the bottom of the sleeve 67; the sleeve 67 includes several sequential stacks The top of the connecting sleeve 67 is installed on the bottom surface of the inner sampling tube 63; the inner ends of the connecting sleeve 67 are also equipped with guide rings 68; a guide hole is provided in the center of the guide ring 68; the center of the bottom surface of the inner sampling tube 63 and the center of the chassis 66 are both A perforation is provided; the needle 5 installed on the bottom surface of the inner sampling tube 63 is placed on the same axis as the guide ring 68 and the perforation.

In one embodiment of the present invention, as shown in Figure 4, after the second connecting rod 31 and the first follower 41 are assembled and fastened, by continuing to press the pressing driving device 1, the second connecting rod 31 moves downward, and the second connecting rod 31 moves downward. A follower 41 moves synchronously with the second connecting rod 31; at this time, the first follower 41 squeezes the inner sampling tube 63 downward through the second follower 44, and at this time, the shrinking part is driven to the outside of the sampling tube 6. move; at the same time, the shrinking member rotates with the mounting base 64 as the center, because when the bottom of the hook body of the shrinking member is set horizontally, it is flush with the inner end of the inner protrusion 61; when the body extends out of the outer sampling tube 6, the inclined portion moves inward Shrink; at this time, the chassis 66 is released, and the sleeves 67 on both sides of the guide ring 68 are released; when the needle 5 is sampled, the sleeves 67 completely wrap the needle 5 to prevent the tumor cells from leaking; then when retracting, the sleeves 67 are 67 and the needle 5 are completely wrapped and recovered into the inner sampling tube 63.

The safety protection mechanism 3 also includes a second housing 72; a support platform 73 is fixedly installed on the inner wall of the second housing 72; a support ring 71 is installed on the top of the support platform 73; the cross-sectional area of the support ring 71 is smaller than the movable block 48.

In one embodiment of the present invention, the second housing 72 is used to isolate and store the outer sampling cylinder 6 and the inner sampling cylinder 63 to prevent tumor cell contamination; through the annular plate 45 on the outer wall of the outer sampling cylinder 6 and the second housing 72 The position of the support platform 73 formed inside corresponds to the position of the movable block 48 and the support ring 71 at the bottom end.

The bottom of the second housing 72 is installed with a rubber sleeve 7 that contacts the outer sampling tube 6 .

In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation and is therefore not to be construed as a limitation of the invention.

The above-described embodiments only describe the preferred modes of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. All deformations and improvements shall fall within the protection scope determined by the claims of the present invention.

Claims (7)

1. A tumor safety sampling device, characterized in that it includes: a pressing driving device (1) and a safety sampling device; the sampling device includes a sampling driving mechanism (2), a safety protection mechanism (3) and a sampling caching mechanism (4 ); the pressing drive device (1) is installed on the top of the sampling drive mechanism (2); the sampling drive mechanism (2) is inserted into the safety protection mechanism (3); the sampling cache mechanism (4 ) is placed in the safety protection mechanism (3), and the sampling caching mechanism (4) is connected to the sampling driving mechanism (2); the needle (5) at the bottom of the sampling caching mechanism (4) extends out of The inner cavity of the safety protection mechanism (3); the sampling drive mechanism (2) includes a first housing (21); the top of the first housing (21) is formed to be plugged into the pressing drive device (1) The annular plug-in slot (22) matches the wall (112); the first housing (21) is hollow inside; the bottom surface of the first housing (21) is recessed inward to form an adjustment groove (23); A mounting hole is provided in the center of the bottom surface of the adjustment groove (23), and the mounting hole extends upward through the center of the top surface of the first housing (21); a first driving member (24) is provided on the top of the first housing (21) ); the top surface of the first driving member (24) is provided with a fixing groove (25) downward; the bottom surface of the fixing groove (25) extends downward to form a connecting rod (113) inserted into the pressing driving device (1) ) matching ball hinge groove (26); A threaded groove is opened in the center of the bottom surface of the first driving part (24); a second driving part (27) is installed in the threaded groove of the first driving part (24); the second driving part (27) It includes a first connecting rod (311); the top of the first connecting rod (311) is threadedly connected to the first driving member (24), and the bottom of the first connecting rod (311) extends out of the mounting hole and is fixed. A second connecting rod (31) is installed; the wall of the second connecting rod (31) gradually increases from top to bottom, and the second connecting rod (31) is hollow inside; the second connecting rod (31) ) One end of the bottom surface protrudes downward to form a sharp protrusion (32); the other side of the bottom surface of the second connecting rod (31) has a hollow groove inward, and the hollow groove is in contact with the second connecting rod (31) The inner cavity is connected; the intersection surface of the sharp protrusion (32) and the hollow groove forms a first support plate (33); the movable end of the first support plate (33) is fixedly connected to one end of the semicircular plate (34) ; The other end of the semicircular plate (34) is fixedly installed with a second support plate (35); the second support plate (35), the semicircular plate (34) and the first support plate (33) connect the second support plate (35) The inner cavity of the connecting rod (31) is divided into a first inner cavity and a second inner cavity; an arc-shaped chute (36) is provided in the middle of the peripheral wall of the semicircular plate (34); a semicircular block is provided inside the semicircular plate (34) (37); a restoration block (38) is fixedly installed on one end of the outer wall of the semicircular block (37); the restoration block (38) is slidably arranged in the arcuate chute (36), and the restoration block (38) ) penetrates the inner wall of the second connecting rod (31) and is placed in the adjustment groove (23); the outer wall of the second connecting rod (31) is provided with a through groove (39) corresponding to the position of the arcuate chute (36) ); the adjustment groove (23) is provided with a recessed area relative to the position of the restoration block (38); one end of the second elastic member (310) is installed in the middle of the restoration block (38); the second The elastic member (310) penetrates the first inner cavity and the second inner cavity and is fixedly installed in the middle of the inner wall of the second connecting rod (31); the sampling caching mechanism (4) includes a connection with the second driving member (27). ) plugged first driven member (41); the first driven member (41) includes the sharp protrusion (32) with the same structure as the second driving member (27), the first support plate (33), the second support plate (35), the semicircular plate (34) and the semicircular block (37); the second driving member (27) and the first driven member (41) are related to the two first support plates (33) is symmetrical about the center of the intersection; a driven block (42) is fixedly installed on one end of the outer wall of the semicircular block (37) of the first driven member (41); the outer wall of the first driven member (41) is provided with a driven block (42). A through-groove (39) corresponding to the position of the arc-shaped chute (36), the driven block (42) is placed in the through-groove (39); a third elastic is installed in the middle of the driven block (42) One end of the member (43); the third elastic member (43) is fixedly installed in the middle of the inner wall of the first follower member (41); A second follower (44) is fixedly installed at the bottom of the first follower (41); an outer sampling tube (6) is installed at the connection between the first follower (41) and the second follower (44). ); an annular plate (45) is fixedly installed on the top of the outer wall of the outer sampling tube (6); an annular groove (46) is opened upward at the bottom of the annular plate (45); annular grooves (46) are installed at equal intervals on the bottom surface. Several fourth elastic members (47); the movable ends of the fourth elastic members (47) are equipped with movable blocks (48); the movable blocks (48) are limited in the annular groove (46); The position of the movable block (48) corresponds to the support ring (71) of the safety protection mechanism (3). 2. A tumor safety sampling device according to claim 1, characterized in that: the pressing driving device (1) includes a pressing handle (11), and the pressing handle (11) includes an operating part and a pressing grabbing part. ; The operating part includes a counterweight (12) and a pressing key (13); one end of the first operating lever (14) is fixedly connected to the pressing key (13); the other end of the first operating lever (14) is One end extends into the operating part and is drivingly connected to the second operating rod (16) that presses the grabbing part through the transmission rod (15); A first limiting ring (17) and a second limiting ring (18) are respectively formed on the middle part of the side wall of the first operating lever (14) and the middle part of the side wall of the second operating lever (16); A first elastic member (19) is installed between the bit ring (17) and the pressing key (13); the first elastic member (19) is sleeved on the first operating lever (14); The end of the first operating rod (14) is rotationally connected to one end of the transmission rod (15) through a rotating shaft; the pressing handle (11) is also provided with a movable groove (110); the middle part of the transmission rod (15) is fixed A sliding rod (111) is installed; the sliding rod (111) is slidably arranged in the movable groove (110) and is used to adjust the transmission center of the transmission rod (15); the other end of the transmission rod (15) The rotating shaft is rotationally connected to one end of the second operating rod (16); the other end of the second operating rod (16) is inserted into the sampling drive mechanism (2) and connected with the sampling drive. The mechanism (2) is fixedly connected. 3. A tumor safety sampling device according to claim 2, characterized in that: one side wall of the pressing and grabbing portion also extends outward to form a plug-in wall (112); the plug-in wall (112) It is a hollow cylindrical structure; the movable side of the insertion wall (112) is inserted into the sampling drive mechanism (2); the side wall of the pressing and grabbing part extends inward to form a grabbing groove; the grabbing groove The diameter of the notch is smaller than the diameter of the second limiting ring (18); the second operating rod (16) extends out of the grabbing groove, and the extended end of the second operating rod (16) is fixedly installed There are several plug-in rods (113); the movable ends of the plug-in rods (113) are equipped with ball hinges. 4. A tumor safe sampling device according to claim 1, characterized in that: the bottom surface of the outer sampling tube (6) is hollow, and a number of inner protrusions (61) are formed on the bottom surface of the outer sampling tube (6). ); the second follower (44) is placed in the outer sampling tube (6), and a safety isolation component is installed at the bottom of the second follower (44); the second follower (44) 44) A buffer cavity is provided inside. 5. A tumor safety sampling device according to claim 4, characterized in that: the safety isolation component includes a limiting block (62) and an inner sampling cylinder (63); the top of the inner sampling cylinder (63) passes through The limiting block (62) is installed at the bottom of the follower (44); at least one set of shrink components is installed on the outer wall of the inner sampling tube (63); each set of the shrink components includes two shrink components and two mounting seats ( 64); the two shrinking parts are respectively installed on the mounting seat (64) through rotation of the rotating shaft; and the two shrinking parts are symmetrical about the center of the inner sampling tube (63); The shrinking member includes a hook body part and an inclined part; one end of the hook body part and one end of the inclined part are respectively rotatably installed on both sides of the rotating shaft; the hook body part is placed below the inclined part; the top end of the inclined part passes through the third Five elastic members (65) are elastically connected to the top of the inner sampling tube (63); when the bottom of the hook body is set horizontally, it is flush with the inner end of the inner protrusion (61); several inner sides of the hook body A chassis (66) is supported; the chassis (66) is covered at the bottom of the sleeve (67); the sleeve (67) includes several sequentially stacked collars; the top of the sleeve (67) is installed on The bottom surface of the inner sampling tube (63); guide rings (68) are installed at both ends of the inner side of the sleeve (67); a guide hole is opened in the center of the guide ring (68); the inner sampling tube (63) ) The center of the bottom surface and the center of the chassis (66) are both provided with perforations; the needle (5) installed on the bottom surface of the inner sampling tube (63) is placed on the same axis as the guide ring (68) and the perforations. 6. A tumor safety sampling device according to claim 5, characterized in that: the safety protection mechanism (3) also includes a second housing (72); a support is fixedly installed on the inner wall of the second housing (72). The support ring (71) is installed on the top of the support platform (73); the cross-sectional area of the support ring (71) is smaller than the movable block (48). 7. A tumor safety sampling device according to claim 6, characterized in that: a rubber sleeve (7) is installed at the bottom of the second housing (72) to contact the outer sampling cylinder (6).