Medical hollow drill integrating injection and sampling

Abstract

The invention discloses an injection and sampling integrated medical hollow drill which comprises a base, a hollow drill device and an injection and sampling device, a feeding driving device, a combination driving device and a drill sleeve are mounted on the base, and a first elastic sealing ring is mounted on the drill sleeve; the hollow drill device is installed on the base and connected to the feeding driving device, the hollow drill device comprises a drill bit assembly and a drill bit driving device, the drill bit assembly comprises a hollow drill bit, a drill bit seat and a drill bit sealing rod, the hollow drill bit is inserted into the drill sleeve, and the first elastic sealing ring is used for being tightly attached to the hollow drill bit; the hollow drill bit is sleeved with a second elastic sealing ring, and the drill bit sealing rod is installed on the drill bit base in a sliding mode and abuts against the second elastic sealing ring. And the combined driving device is used for driving the injection and sampling device to push the drill bit sealing rod to press the second elastic sealing ring on the drill bushing. According to the medical hollow drill, the functions of drilling, injecting and sampling can be integrated, liquid is effectively prevented from intruding into the medical hollow drill, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of medical drills, and in particular to a medical hollow drill integrating injection and sampling. Background Art

[0002] In the modern medical field, precise and efficient medical instruments are essential for the diagnosis, treatment and medical research of diseases. For example, medical drills play an important role in medical operations involving bones.

[0003] Traditional medical drills are often single-function and only focus on drilling operations. In actual medical scenarios, for example, in the process of acute transcranial bone marrow administration, it is necessary to first use a bone drill to drill a hole in the skull, and then replace other instruments for injection. This not only increases the complexity of the operation and treatment time, but also may increase the risk of infection due to multiple instrument changes.

[0004] In order to solve the above technical problems, there have been devices in the prior art that can realize the automatic execution of drilling, injection or sampling in one, such as a minimally invasive transcranial bone marrow injection and sampling device disclosed in the Chinese invention patent application with application publication number CN116999116A and publication date 2023.11.07, which includes: an injection sampling mechanism and an actuator; the injection sampling mechanism includes a drill bit and a liquid storage cylinder, the drill bit is below the liquid storage cylinder, and a through flow channel is provided inside the drill bit. Although the device adopts a two-in-one automatic integrated solution of drilling, injection or sampling, since there is no sealing structure in the device, during the drilling process, the liquid will flow along the drill bit into the inside of the device, which is easy to cause damage and contamination to the device, reduce the service life, and is difficult to clean. Summary of the invention

[0005] The problem to be solved by the present invention is to provide a medical hollow drill integrating injection and sampling, so as to overcome the defect that liquid easily leaks into the inside of the device during operation of the existing hollow drill with injection or sampling function, causing damage and pollution.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a medical hollow drill integrating injection and sampling, comprising:

[0007] A base, on which a feed drive device and a combined drive device are installed, and a drill sleeve is fixed at one end of the base, and a first elastic sealing ring is installed at one end of the drill sleeve;

[0008] A hollow drill device, wherein the hollow drill device is slidably mounted on the base and connected to the feed drive device, wherein the feed drive device is used to drive the hollow drill device to move linearly; the hollow drill device comprises a drill bit assembly and a drill bit drive device for driving the drill bit assembly to rotate, wherein the drill bit assembly comprises a hollow drill bit, a drill bit seat and a drill bit sealing rod, wherein the hollow drill bit is coaxially fixed to one end of the drill bit seat, and the hollow drill bit is inserted into the drill sleeve, wherein the first elastic sealing ring is used to closely fit with the outer peripheral surface of the hollow drill bit to form a first seal; a second elastic sealing ring is sleeved on the hollow drill bit, and the drill bit sealing rod is slidably mounted on the drill bit seat and abuts against the second elastic sealing ring;

[0009] An injection and sampling device is slidably mounted on the base and connected to the combined drive device. A liquid reservoir is mounted on the injection and sampling device. The combined drive device is used to drive the injection and sampling device to move toward the hollow drill device so that the liquid reservoir is connected to the drill bit assembly. At the same time, the injection and sampling device can push the drill bit sealing rod to press the second elastic sealing ring onto the other end of the drill sleeve to form a second seal.

[0010] As a further improvement of the present invention, the drill bit assembly also includes a drill tail needle, which is coaxially fixed at the other end of the drill bit seat. When the combined driving device drives the injection and sampling device to move toward the hollow drill device, the drill tail needle can penetrate into the liquid reservoir, thereby allowing the hollow drill bit to be connected to the liquid reservoir through the drill bit seat and the drill tail needle.

[0011] As a further improvement of the present invention, a through hole is opened at one end of the drill sleeve, and the first elastic sealing ring is in an I-shape and is installed in the through hole; the first elastic sealing ring is provided with an outer ring and an inner ring, the outer ring is located on the outer side of one end of the drill sleeve, and the inner ring is located on the inner side of one end of the drill sleeve;

[0012] The hollow drill bit is provided with a main body section, a drill needle section and a conical transition section integrally connected between the main body section and the drill needle section, wherein the main body section is fixed to one end of the drill bit seat; when in operation, the drill needle section extends outward from the center hole of the first elastic sealing ring, and the transition section is tightly pressed onto the inner ring.

[0013] As a further improvement of the present invention, the drill bit sealing rod is provided with an annular push plate and a push rod integrally connected to the annular push plate, a limiting groove is axially provided on the outer surface of the drill bit seat, and a receiving groove is provided at one end of the drill bit seat, the annular push plate is located in the receiving groove, the push rod is slidably fitted in the limiting groove, and one end of the push rod away from the annular push plate protrudes axially from the other end of the drill bit seat; the second elastic sealing ring is located in the receiving groove and abuts against the annular push plate.

[0014] As a further improvement of the present invention, the drill driving device includes a casing, a motor stator and a motor rotor, the motor stator is fixed in the casing, the drill bit assembly also includes an internal hollow drill clamp, the drill clamp is rotatably mounted in the casing through a bearing, the motor rotor is fixedly mounted on the drill clamp and is located in the motor stator; the drill bit seat is inserted in the drill clamp, and a drill bit quick disassembly and assembly mechanism is provided between the drill bit seat and the drill clamp.

[0015] As a further improvement of the present invention, the drill bit quick disassembly and assembly mechanism includes an entrance groove axially arranged on the outer side surface of the other end of the drill bit seat, a spiral groove circumferentially arranged on the outer side surface of the drill bit seat and connected to the entrance groove, and a pin fixedly installed on the drill clamp. When the drill bit seat is inserted into the drill clamp, the pin enters the spiral groove from the entrance groove, and when the drill bit seat is rotated, the pin slides along the spiral groove to lock the drill bit seat.

[0016] As a further improvement of the present invention, the outer surface of the drill bit seat is conical, and the inner hole of the drill clamp is also conical. When the drill bit seat and the drill clamp are locked with each other through the drill bit quick disassembly and assembly mechanism, the conical outer surface of the drill bit seat fits with the conical inner hole wall of the drill clamp.

[0017] As a further improvement of the present invention, a spring latch mechanism is radially installed on the casing, and a socket is radially opened on the drill clamp. In a natural state, the spring latch mechanism is outside the socket, and when the spring latch mechanism is pressed, it is inserted into the socket.

[0018] As a further improvement of the present invention, a positioning seat is slidably mounted on the base, and a guide platform, a first conductive contact and locking hooks distributed at both ends of the guide platform are provided on the positioning seat. A guide groove, a second conductive contact and a quick locking tongue mechanism are provided at the bottom of the injection and sampling device. The injection and sampling device is installed on the positioning seat so that the guide platform is positioned in the guide groove and is locked by the quick locking tongue mechanism and the locking hook, and at the same time, the second conductive contact is in contact and conduction with the first conductive contact.

[0019] As a further improvement of the present invention, the feed drive device includes a feed motor, a screw transmission mechanism, a force sensor and a displacement sensor. The feed motor is used to drive the hollow drill device to move linearly through the screw transmission mechanism. The force sensor is used to detect the pressure of the hollow drill bit when it is working. The displacement sensor is used to detect the displacement of the hollow drill device.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention provides a medical hollow drill integrating injection and sampling. A hollow drill device and an injection and sampling device are installed on a base. The hollow drill device is driven by a feed drive device to perform a drilling operation. The injection and sampling device is driven by a combination drive device to combine with the hollow drill device to perform injection or sampling, thereby realizing the integration of drilling, injection and sampling functions. It can not only simplify the surgical process, reduce the number of instrument changes during surgery, make the operation more convenient, and reduce the risk of infection, but also ensure the accuracy of the injection and sampling positions, so that the drug can reach the target area more accurately, and improve the treatment effect;

[0022] 2. The present invention has a drill sleeve installed on the base, and a first elastic sealing ring and a second elastic sealing ring are arranged between the drill sleeve and the hollow drill bit, so that a double seal can be formed during the injection or sampling process, effectively preventing liquid from invading the interior of the medical hollow drill, ensuring the normal operation of the medical hollow drill, increasing the service life, and facilitating cleaning and disinfection;

[0023] 3. The present invention provides a drill tail needle on the hollow drill device, which can easily pierce the elastic sealing body of the liquid reservoir installed on the injection and sampling device, thereby ensuring sealing while establishing a channel;

[0024] 4. The present invention provides a drill bit quick disassembly and assembly mechanism between the drill bit seat and the drill clamp, thereby enabling quick disassembly and assembly of the hollow drill bit and ensuring concentricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A stereoscopic diagram of a medical hollow drill integrating injection and sampling according to the present invention;

[0026] Figure 2 It is a cross-sectional view of the medical hollow drill integrating injection and sampling of the present invention;

[0027] Figure 3 A three-dimensional diagram of a hollow drill device and a drill sleeve in the present invention;

[0028] Figure 4 It is a right side view of the hollow drill device and the drill sleeve in the present invention;

[0029] Figure 5 For the present invention Figure 4Cross-sectional view in the BB direction;

[0030] Figure 6 For the present invention Figure 4 Cross-sectional view in CC direction;

[0031] Figure 7 is a three-dimensional diagram of the drill bit assembly of the present invention;

[0032] Figure 8 is an exploded view of the drill bit assembly of the present invention;

[0033] Fig. 9 is a cross-sectional view of the drill bit assembly of the present invention;

[0034] Fig.10 A three-dimensional diagram of a drill bit holder in the present invention;

[0035] Fig.11 It is a stereoscopic diagram of the medical hollow drill integrating injection and sampling of the present invention after removing the injection and sampling devices;

[0036] Fig.12 is a stereoscopic diagram of the injection and sampling device of the present invention;

[0037] Fig.13 For the present invention Figure 2 Enlarged view of part A in the middle.

[0038] Combined with the accompanying drawings, the following description is given:

[0039] 1. base; 11. positioning seat; 12. guide platform; 13. first conductive contact;

[0040] 14. Locking hook; 2. Feed drive device; 21. Feed motor; 22. Screw drive mechanism; 23. Force sensor; 24. Displacement sensor; 3. Combined drive device; 4. Drill sleeve; 5. First elastic sealing ring; 51. Outer ring; 52. Inner ring; 6. Hollow drill device; 61. Hollow drill bit; 611. Main body section; 612. Drill needle section; 613. Transition section; 62. Drill seat; 621. Limiting groove; 622. Accommodating groove; 623. Entrance groove; 624. Screw Rotary groove; 63, drill tail needle; 64, drill sealing rod; 641, annular push plate; 642, push rod; 65, second elastic sealing ring; 66, housing; 67, motor stator; 68, motor rotor; 69, drill clamp; 691, pin; 692, socket; 610, spring latch mechanism; 7, injection and sampling device; 71, guide groove; 72, second conductive contact; 73, quick locking tongue mechanism; 731, locking tongue; 732, spring; 733, pull rod; 8, liquid reservoir; 9, handle. DETAILED DESCRIPTION

[0041] A preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

[0042] See also Figure 1 and Figure 2 The present invention provides a medical hollow drill integrating injection and sampling, comprising: a base 1, a feed drive device 2, a combined drive device 3, a drill sleeve 4, a hollow drill device 6 and an injection and sampling device 7.

[0043] The feed drive device 2 and the combination drive device 3 are both installed inside the base 1. A handle 9 is provided at the bottom of the base 1 to facilitate medical personnel to operate the medical hollow drill by hand, and a battery for powering the feed drive device 2, the combination drive device 3, the hollow drill device 6 and the injection and sampling device 7 is installed in the handle 9.

[0044] For ease of understanding, Figure 1 The figure is for reference, and the side of the medical hollow drill facing the patient is defined as the front, and the other side opposite thereto is defined as the back. The hollow drill device 6 and the injection and sampling device 7 are both slidably mounted on the top of the base 1, and the hollow drill device 6 is located in front of the injection and sampling device 7. The hollow drill device 6 is connected to the feed drive device 2, and the feed drive device 2 is used to drive the hollow drill device 6 to move linearly to achieve the drilling operation. The injection and sampling device 7 is connected to the combination drive device 3, and the combination drive device 3 is used to drive the injection and sampling device 7 to move linearly so that the injection and sampling device 7 is combined with the hollow drill device 6.

[0045] In order to improve the stability of the movement of the hollow drilling device 6 and the injection and sampling device 7 , guide rails are provided between the hollow drilling device 6 , the injection and sampling device 7 and the base 1 .

[0046] See also Figures 3 to 5 The hollow drill device 6 includes a drill assembly and a drill driving device. The drill assembly is installed in the drill driving device in a horizontal direction. The drill driving device is used to drive the drill assembly to rotate and cooperate with the feed driving device 2 to achieve drilling. The drill assembly includes a hollow drill 61, a drill seat 62 and a drill sealing rod 64. The hollow drill 61 is coaxially fixed to the front end of the drill seat 62. The hollow drill 61 is provided with a first flow channel running through the front and rear ends thereof, which is used to allow liquid to flow during injection or sampling.

[0047] Furthermore, the drill sleeve 4 is cylindrical in shape, a first elastic sealing ring 5 is installed at the front end of the drill sleeve 4, and a ring joint is extended radially outward at the rear end of the drill sleeve 4; a bracket is provided at the front end of the base 1, and the drill sleeve 4 is fixed to the bracket in the horizontal direction through the ring joint. The hollow drill bit 61 is inserted into the drill sleeve 4, and the first elastic sealing ring 5 is used to fit tightly with the outer peripheral surface of the hollow drill bit 61 to form a first seal.

[0048] It is worth mentioning that the hollow drill bit 61 is sleeved with a second elastic sealing ring 65, which is arranged opposite to the inner side of the annular joint of the drill sleeve 4, and the drill bit sealing rod 64 is slidably mounted on the drill bit seat 62 and abuts against the second elastic sealing ring 65. When the driving device 3 drives the injection and sampling device 7 to move toward the hollow drill device 6, the injection and sampling device 7 can push the drill bit sealing rod 64 to press the second elastic sealing ring 65 against the inner side of the annular joint of the drill sleeve 4 to form a second seal.

[0049] The present invention installs a hollow drill device 6 and an injection and sampling device 7 on a base 1, wherein the hollow drill device 6 is driven by a feed drive device 2 to perform a drilling operation, and the injection and sampling device 7 is driven by a combination drive device 3 to combine with the hollow drill device 6 to perform injection or sampling, thereby realizing the integration of drilling, injection and sampling functions, which can not only simplify the surgical process, reduce the number of instrument changes during surgery, make the operation more convenient, and reduce the risk of infection, but also ensure the accuracy of the injection and sampling positions, so that the drug reaches the target area more accurately and improves the treatment effect. At the same time, the present invention also installs a drill sleeve 4 on the base 1, and a first elastic sealing ring 5 and a second elastic sealing ring 65 are arranged between the drill sleeve 4 and the hollow drill bit 61, which can form a double seal during the injection or sampling process, effectively preventing liquid from invading the interior of the medical hollow drill, ensuring the normal operation of the medical hollow drill, and improving the service life, and can also facilitate cleaning and disinfection.

[0050] The first elastic sealing ring 5 and the second elastic sealing ring 65 can both be made of elastic soft rubber materials, such as silicone, rubber, TPU, PDMS, etc.

[0051] like Figure 5 As shown, a through hole is opened at the front end of the drill sleeve 4, and the first elastic sealing ring 5 is I-shaped and clamped in the through hole; the first elastic sealing ring 5 is provided with an outer ring 51 and an inner ring 52, the outer ring 51 is located on the outside of the front end of the drill sleeve 4, and the inner ring 52 is located on the inside of the front end of the drill sleeve 4.

[0052] like Figure 7 As shown, the hollow drill bit 61 is provided with a main body section 611, a drill needle section 612 and a transition section 613. The outer diameter of the drill needle section 612 is much smaller than the outer diameter of the main body section 611. The transition section 613 is conical and integrally connected between the main body section 611 and the drill needle section 612. The front end of the drill seat 62 is provided with a mounting hole along the axis, and the rear end of the main body section 611 is fixedly inserted into the mounting hole of the drill seat 62.

[0053] like Figure 2As shown, the feed drive device 2 includes a feed motor 21, a screw transmission mechanism 22, a force sensor 23 and a displacement sensor 24. The hollow drill device 6 is connected to the screw transmission mechanism 22 through the force sensor 23, and the screw transmission mechanism 22 is connected to the feed motor 21. The feed motor 21 is used to drive the hollow drill device 6 to move linearly through the screw transmission mechanism 22. The force sensor 23 is used to detect the pressure of the hollow drill bit 61 when it is working, and the displacement sensor 24 is used to detect the displacement of the hollow drill device 6.

[0054] For example, during acute administration of drugs through the skull bone marrow, the outer ring 51 of the first elastic sealing ring 5 is pressed against the skull surface, and the outer ring 51 is squeezed and deformed to form a sealing surface; when the drill drive device drives the drill assembly to reach the set speed, the feed drive device 2 pushes the hollow drill device 6 to move along the feed guide rail, and the drill needle section 612 of the hollow drill bit 61 extends outward from the center hole of the first elastic sealing ring 5 to perform a drilling operation on the skull; when the hollow drill bit 61 enters the skull, the transition section 613 will be tightly pressed against the inner ring 52 of the first elastic sealing ring 5, thereby forming the first seal. In this process, the displacement sensor 24 monitors the displacement value of the hollow drill device 6 in real time, and the force sensor 23 monitors the drilling force in real time. When the displacement reaches the set value, the feed motor 21 stops moving, and the drill drive device also stops moving.

[0055] It is worth mentioning that the drill assembly also includes a drill tail needle 63, which is coaxially fixed to the rear end of the drill seat 62. A second flow channel is provided inside the drill seat 62, and the second flow channel is connected to the hollow drill bit 61 and the drill tail needle 63. A liquid reservoir 8 is installed on the front end of the injection and sampling device 7, and the front end of the liquid reservoir 8 is sealed by an elastic sealing body.

[0056] In the present invention, the structure of the combined drive device 3 is the same as that of the feed drive device 2. After the drilling is completed, the combined drive device 3 drives the injection and sampling device 7 to move toward the hollow drill device 6 until the drill tail needle 63 pierces the elastic seal on the reservoir 8 and enters the reservoir 8 to achieve the combination, so that the hollow drill 61 is connected to the reservoir 8 through the drill seat 62 and the drill tail needle 63; at this time, the displacement sensor of the combined drive device 3 reaches the limit value, the combined drive device 3 stops moving, and the injection and sampling device 7 starts to inject or extract tissue samples according to the program setting.

[0057] The injection and sampling device 7 is provided with a power device inside, and the power device is connected to the piston of the liquid reservoir 8 by transmission, and the power device is used to drive the piston to reciprocate axially inside the liquid reservoir 8 to achieve positive pressure injection and negative pressure sampling. The power device is not the part to be improved by the present invention, and the existing conventional technology can be adopted, or the same structure as the feed drive device 2 can be adopted.

[0058] See also Figures 7 to 9 The drill seal rod 64 is provided with an annular push plate 641 and a push rod 642 integrally connected to the annular push plate 641. In this embodiment, two push rods 642 are provided symmetrically. A limiting groove 621 is axially provided on the outer surface of the drill seat 62, and a receiving groove 622 is provided at the front end of the drill seat 62. The annular push plate 641 is located in the receiving groove 622. The inner hole of the annular push plate 641 allows the hollow drill 61 to pass through; the push rod 642 is slidably fitted in the limiting groove 621, and one end of the push rod 642 away from the annular push plate 641 (i.e., the rear end of the push rod 642) protrudes axially out of the rear end of the drill seat 62. The second elastic sealing ring 65 is in the shape of an annular ring, which is located in the receiving groove 622 and abuts against the annular push plate 641.

[0059] When the injection and sampling device 7 is driven by the combined driving device 3 to be combined with the hollow drilling device 6, the front end plate of the injection and sampling device 7 pushes the push rod 642 to move, and then the second elastic sealing ring 65 is pressed against the inner side of the annular joint of the drill sleeve 4 through the annular push plate 641 to form a second seal.

[0060] See also Figure 5 and Figure 6 The drill driving device includes a housing 66, a motor stator 67 and a motor rotor 68. The motor stator 67 is fixed in the housing 66. The drill assembly also includes a drill clamp 69 with a hollow interior. The drill clamp 69 is rotatably mounted in the housing 66 through a bearing. The motor rotor 68 is fixedly sleeved on the drill clamp 69 and is located in the motor stator 67. The drill seat 62 is inserted in the drill clamp 69, and a drill quick disassembly mechanism is provided between the drill seat 62 and the drill clamp 69.

[0061] See also Figure 6 and Fig.10 The drill bit quick disassembly and assembly mechanism includes an entrance groove 623 axially arranged on the outer side of the rear end of the drill bit seat 62, a spiral groove 624 circumferentially arranged on the outer side of the drill bit seat 62 and connected to the entrance groove 623, and a pin 691 fixedly installed on the drill clamp 69, wherein one end of the spiral groove 624 is connected to the entrance groove 623, and the other end of the spiral groove 624 spirally extends forward.

[0062] Preferably, in this embodiment, the inlet groove 623, the spiral groove 624 and the pin 691 are each provided with two corresponding ones that are centrally symmetrically distributed.

[0063] In addition, the present invention also sets the outer surface of the drill seat 62 to be conical. Specifically, in this embodiment, the outer surface of the front half of the drill seat 62 is set to be conical, and the inner hole of the front half of the drill clamp 69 is also set to be conical. When the drill seat 62 and the drill clamp 69 are locked with each other through the drill quick disassembly mechanism, the conical outer surface of the drill seat 62 fits with the conical inner hole wall of the drill clamp 69 to ensure concentricity.

[0064] When installing the drill seat 62, insert the drill seat 62 into the inner hole of the drill clamp 69 from front to back, and make the pin 691 enter the entrance groove 623 until it reaches the spiral groove 624, then rotate the drill seat 62 so that the pin 691 slides along the spiral groove 624, forming an axial tension, forcing the tapered outer surface of the drill seat 62 to fit tightly with the tapered inner hole wall of the drill clamp 69, and realizing rotational friction self-locking. When disassembling the drill seat 62, rotate the drill seat 62 in the opposite direction, and the pin 691 and the spiral groove 624 form a reverse thrust to separate the drill seat 62 from the drill clamp 69.

[0065] like Figure 5 As shown, in order to prevent the drill clamp 69 from rotating with the drill bit holder 62 during installation or removal, the present invention has a spring latch mechanism 610 radially mounted on the housing 66, and a plug hole 692 radially opened on the drill clamp 69. The spring latch mechanism 610 includes a latch radially slidably mounted on the housing 66 and a spring elastically abutting against the latch. In a natural state, the latch is outside the plug hole 692 under the elastic force of the spring. When the latch is pressed, it is inserted into the plug hole 692, thereby realizing rapid locking of the drill clamp 69.

[0066] See also Figures 11 to 13 A positioning seat 11 is slidably mounted on the top of the base 1, and a guide platform 12, a first conductive contact 13, and locking hooks 14 distributed at both ends of the guide platform 12 are arranged on the positioning seat 11. A guide groove 71, a second conductive contact 72, and a quick locking tongue mechanism 73 are arranged at the bottom of the injection and sampling device 7. The injection and sampling device 7 is mounted on the positioning seat 11, so that the guide platform 12 is positioned in the guide groove 71 to ensure that the axis of the injection and sampling device 7 is parallel to the axis of the hollow drill device 6; at the same time, the second conductive contact 72 is in contact with the first conductive contact 13 to realize power supply and communication for the injection pump.

[0067] In addition, the injection and sampling device 7 is quickly locked by cooperating with the locking hook 14 through the quick locking tongue mechanism 73. Fig.13 As shown, the quick locking tongue mechanism 73 includes a locking tongue 731, a spring 732 and a pull rod 733. A guide block is fixed at the bottom of the injection and sampling device 7. A guide hole is provided on the guide block in the horizontal direction. The locking tongue 731 is slidably inserted in the guide hole. A first inclined surface is provided at the top of the front end of the locking tongue 731, a second inclined surface is provided on the locking hook 14, and an outer convex ring is provided at the rear end of the locking tongue 731. The outer convex ring is elastically abutted by the spring 732 and stopped on the rear end surface of the guide block. At the same time, the first inclined surface of the locking tongue 731 is attached to the second inclined surface of the locking hook 14 to form a clamping force to achieve the quick locking of the injection and sampling device 7. The pull rod 733 is fixedly connected to the locking tongue 731. Pulling the pull rod 733 backward drives the locking tongue 731 to disengage from the locking hook 14, and the injection and sampling device 7 can be quickly disassembled.

[0068] It can be seen that the medical hollow drill integrating injection and sampling of the present invention is provided with a hollow drill device 6 and an injection and sampling device 7 installed on the base 1, the hollow drill device 6 is driven by the feed drive device 2 to perform drilling operation, and the injection and sampling device 7 is driven by the combination drive device 3 to combine with the hollow drill device 6 to perform injection or sampling, thereby realizing the integration of drilling, injection and sampling functions, which can not only simplify the surgical process, reduce the number of instrument changes during surgery, make the operation more convenient, and reduce the risk of infection, but also ensure the accuracy of the injection and sampling position, so that the drug reaches the target area more accurately and improves the treatment effect. At the same time, the present invention is provided with a drill sleeve 4 installed on the base 1, and a first elastic sealing ring 5 and a second elastic sealing ring 65 are arranged between the drill sleeve 4 and the hollow drill bit 61, so that a double seal can be formed during the injection or sampling process, effectively preventing liquid from invading the interior of the medical hollow drill, ensuring the normal operation of the medical hollow drill, and improving the service life, and can also be convenient for cleaning and disinfection. Furthermore, the present invention provides a drill tail needle 63 on the hollow drill device 6, which can easily pierce the elastic sealing body of the liquid reservoir 8 installed on the injection and sampling device 7, and ensure the sealing while establishing the channel. In addition, the present invention provides a drill quick disassembly and assembly mechanism between the drill seat 62 and the drill clamp 69, which can realize the quick disassembly and installation of the hollow drill 61 and ensure the concentricity.

[0069] Many specific details are described in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A medical hollow drill integrating injection and sampling, characterized in that: include: A base (1), a feed drive device (2) and a combination drive device (3) are installed on the base (1), a drill sleeve (4) is fixed to one end of the base (1), and a first elastic sealing ring (5) is installed at one end of the drill sleeve (4); A hollow drill device (6), wherein the hollow drill device (6) is slidably mounted on the base (1) and connected to the feed drive device (2), wherein the feed drive device (2) is used to drive the hollow drill device (6) to move linearly; the hollow drill device (6) comprises a drill bit assembly and a drill bit drive device for driving the drill bit assembly to rotate, wherein the drill bit assembly comprises a hollow drill bit (61), a drill bit seat (62) and a drill bit sealing rod (64), wherein the hollow drill bit (61) is coaxially fixed to one end of the drill bit seat (62), and the hollow drill bit (61) is inserted into the drill sleeve (4), wherein the first elastic sealing ring (5) is used to closely fit with the outer peripheral surface of the hollow drill bit (61) to form a first seal; a second elastic sealing ring (65) is sleeved on the hollow drill bit (61), and the drill bit sealing rod (64) is slidably mounted on the drill bit seat (62) and abuts against the second elastic sealing ring (65); An injection and sampling device (7) is slidably mounted on the base (1) and connected to the combined drive device (3). A liquid reservoir (8) is mounted on the injection and sampling device (7). The combined drive device (3) is used to drive the injection and sampling device (7) to move toward the hollow drill device (6) so that the liquid reservoir (8) is connected to the drill head assembly. At the same time, the injection and sampling device (7) can push the drill head sealing rod (64) to press the second elastic sealing ring (65) against the other end of the drill sleeve (4) to form a second seal.

2. The medical hollow drill integrating injection and sampling according to claim 1, characterized in that: The drill bit assembly also includes a drill bit tail needle (63), which is coaxially fixed to the other end of the drill bit seat (62). When the combined driving device (3) drives the injection and sampling device (7) to move toward the hollow drilling device (6), the drill bit tail needle (63) can penetrate into the liquid reservoir (8), thereby allowing the hollow drill bit (61) to communicate with the liquid reservoir (8) through the drill bit seat (62) and the drill bit tail needle (63).

3. The medical hollow drill integrating injection and sampling according to claim 1, characterized in that: A through hole is formed at one end of the drill sleeve (4); the first elastic sealing ring (5) is in an I-shape and is installed in the through hole; the first elastic sealing ring (5) is provided with an outer ring (51) and an inner ring (52); the outer ring (51) is located at the outer side of one end of the drill sleeve (4), and the inner ring (52) is located at the inner side of one end of the drill sleeve (4); The hollow drill bit (61) is provided with a main body section (611), a drill needle section (612) and a transition section (613) which is integrally connected between the main body section (611) and the drill needle section (612) and is conical in shape. The main body section (611) is fixed to one end of the drill bit seat (62). When in operation, the drill needle section (612) extends outward from the center hole of the first elastic sealing ring (5), and the transition section (613) is tightly pressed onto the inner ring (52).

4. The medical hollow drill integrating injection and sampling according to claim 1, characterized in that: The drill bit sealing rod (64) is provided with an annular push plate (641) and a push rod (642) integrally connected to the annular push plate (641); a limiting groove (621) is axially provided on the outer surface of the drill bit seat (62); and a receiving groove (622) is provided at one end of the drill bit seat (62); the annular push plate (641) is located in the receiving groove (622); the push rod (642) is slidably fitted in the limiting groove (621); and one end of the push rod (642) away from the annular push plate (641) protrudes axially from the other end of the drill bit seat (62); the second elastic sealing ring (65) is located in the receiving groove (622) and abuts against the annular push plate (641).

5. The medical hollow drill integrating injection and sampling according to claim 1, characterized in that: The drill driving device comprises a housing (66), a motor stator (67) and a motor rotor (68), wherein the motor stator (67) is fixed in the housing (66), and the drill assembly further comprises a drill clamp (69) with a hollow interior, wherein the drill clamp (69) is rotatably mounted in the housing (66) via a bearing, and the motor rotor (68) is fixedly mounted on the drill clamp (69) and is located in the motor stator (67); the drill seat (62) is inserted in the drill clamp (69), and a drill quick disassembly mechanism is provided between the drill seat (62) and the drill clamp (69).

6. The medical hollow drill integrating injection and sampling according to claim 5, characterized in that: The drill bit quick disassembly and assembly mechanism comprises an entrance groove (623) axially arranged on the outer side surface of the other end of the drill bit seat (62), a spiral groove (624) circumferentially arranged on the outer side surface of the drill bit seat (62) and connected to the entrance groove (623), and a column pin (691) fixedly mounted on the drill clamp (69); when the drill bit seat (62) is inserted into the drill clamp (69), the column pin (691) enters the spiral groove (624) from the entrance groove (623), and when the drill bit seat (62) is rotated, the column pin (691) slides along the spiral groove (624) to lock the drill bit seat (62).

7. The medical hollow drill integrating injection and sampling according to claim 6, characterized in that: The outer surface of the drill seat (62) is tapered, and the inner hole of the drill clamp (69) is also tapered. When the drill seat (62) and the drill clamp (69) are locked with each other through the drill quick disassembly mechanism, the tapered outer surface of the drill seat (62) fits with the tapered inner hole wall of the drill clamp (69).

8. The medical hollow drill integrating injection and sampling according to claim 5, characterized in that: A spring latch mechanism (610) is radially mounted on the housing (66), and a plug hole (692) is radially opened on the drill clamp (69). In a natural state, the spring latch mechanism (610) is outside the plug hole (692), and when the spring latch mechanism (610) is pressed, it is inserted into the plug hole (692).

9. The medical hollow drill integrating injection and sampling according to claim 1, characterized in that: A positioning seat (11) is slidably mounted on the base (1), and a guide platform (12), a first conductive contact (13) and locking hooks (14) are arranged on the positioning seat (11) at both ends of the guide platform (12). A guide groove (71), a second conductive contact (72) and a quick locking tongue mechanism (73) are arranged at the bottom of the injection and sampling device (7). The injection and sampling device (7) is mounted on the positioning seat (11) so that the guide platform (12) is positioned in the guide groove (71) and is locked by the quick locking tongue mechanism (73) in cooperation with the locking hook (14), and at the same time, the second conductive contact (72) is in contact and conduction with the first conductive contact (13).

10. The medical hollow drill integrating injection and sampling according to claim 1, characterized in that: The feed drive device (2) comprises a feed motor (21), a screw transmission mechanism (22), a force sensor (23) and a displacement sensor (24); the feed motor (21) is used to drive the hollow drill device (6) to move linearly through the screw transmission mechanism (22); the force sensor (23) is used to detect the pressure of the hollow drill bit (61) when it is working; and the displacement sensor (24) is used to detect the displacement of the hollow drill device (6).

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