Oocyte collection device

Abstract

The present invention discloses an oocyte collection device, which relates to the technical field of oocyte collection, including a guide probe, an oocyte collection needle, a negative pressure aspirator, and a collection container, wherein the collection container includes a constant temperature box and a collection tube arranged on the constant temperature box, which is used to store the aspirated oocyte in the collection tube and keep the activity of the oocyte at a constant temperature; and a B-ultrasound machine, which is connected to the guide probe through a connecting line to provide image guidance for the collection of oocytes. The present invention installs the oocyte collection needle on the upper end of the guide probe, guides the oocyte collection needle to puncture through the guide probe, and simultaneously arranges a clamping and propulsion mechanism for clamping the oocyte collection needle at the upper end of the guide probe, so as to realize rapid propulsion and fine-tuning propulsion of the oocyte collection needle, and avoids the operator from using too much force when using the oocyte collection needle to puncture the follicle, thereby puncturing the follicle, thereby ensuring the safety of oocyte collection.

Description

Technical Field

[0001] The invention belongs to the technical field of oocyte collection, and in particular relates to an oocyte collection device. Background Art

[0002] In the field of modern medicine, assisted reproductive technology is crucial for many families facing fertility problems. Oocyte collection is one of the key links in assisted reproductive technology.

[0003] At present, the traditional method of oocyte collection is mainly through transvaginal ultrasound-guided puncture technology. However, the existing collection devices have some obvious shortcomings.

[0004] 1. Poor stability, which can easily lead to collection failure. Since the oocytes are very small, the follicles need to be punctured during collection to absorb the oocytes inside. However, when the operator pushes the collection needle forward, if the movement is slightly too large, it is easy to puncture the follicles, resulting in collection failure.

[0005] 2. The collection device is inconvenient to operate and cannot accurately perform puncture.

[0006] Based on this, we proposed an oocyte collection device. Summary of the invention

[0007] The purpose of the present invention is to provide an oocyte collecting device to solve the problems that the existing oocyte collecting devices have poor stability and are easy to pierce follicles during collection.

[0008] The present invention is realized by the following technical scheme: an oocyte collection device, comprising

[0009] A guide probe, wherein the guide probe is provided with an oocyte collection needle insertion hole for inserting the oocyte collection needle, and the end of the guide probe is connected to a B-ultrasound machine to guide the oocyte collection needle into the collector's body and present an image on a display screen of the B-ultrasound machine;

[0010] An oocyte collection needle, the end of which is connected to a collection container via a connecting tube. When in use, the oocyte collection needle enters the vagina along with a guide probe, penetrates the vaginal wall to puncture a target follicle, and performs negative pressure suction of follicular fluid, and the oocyte is sucked into the collection container together with the follicular fluid;

[0011] A negative pressure aspirator, which is connected to the collection container via a connecting tube and is used to provide negative pressure to the collection container so that the oocyte collection needle can aspirate follicular fluid;

[0012] A collection container, comprising a constant temperature box and a collection test tube arranged on the constant temperature box, for storing the aspirated oocytes in the collection test tube and maintaining the activity of the oocytes at a constant temperature;

[0013] The B-ultrasound machine is connected to the guiding probe through a connecting line to provide image guidance for the collection of oocytes.

[0014] Preferably, a clamping and propulsion mechanism is provided at the upper end of the guide probe, and the clamping and propulsion mechanism includes a fast propulsion part and a fine-tuning propulsion part;

[0015] The rapid advancement part includes a clamping platform, and the lower parts of both sides of the clamping platform are respectively connected to slides through connecting columns. Two guide rails are symmetrically provided on both sides of the upper end of the guide probe along its length direction, and the two slides at the lower end of the clamping platform are respectively slidably set on the two guide rails; the sides of the two slides are provided with fixing components for fixing the clamping platform and the slide rails.

[0016] Preferably, a group of fixed clamping wheels and a group of movable clamping components are provided at the lower end of the clamping platform, the fixed clamping wheels are connected to one side of the clamping platform through a rotating shaft, a rectangular through groove is provided on the side of the clamping platform opposite to the fixed clamping wheels, and the movable clamping components are arranged in the rectangular through groove;

[0017] The movable clamping assembly includes a supporting plate, a connecting shaft, a movable clamping wheel, a sliding rod and a first spring. There are two sliding rods, which are laterally arranged in a rectangular through groove. The supporting plate is slidably arranged on the sliding rod. The outer side of the sliding rod is sleeved with a first spring, and the first spring is located between the supporting plate and the outer side wall of the rectangular through groove. The lower end of the supporting plate is connected to two movable clamping wheels through a connecting shaft. The two movable clamping wheels and the two fixed clamping wheels have the same height and position. Under the action of the first spring, the two movable clamping wheels are closely close to the two fixed clamping wheels, so as to fix and clamp the oocyte collection needle.

[0018] A driving mechanism is provided on the side of the clamping platform to make the movable clamping wheel leave the fixed clamping wheel. The driving mechanism includes a driving handle, a connecting rod and a hinge seat. One end of the driving handle is hinged to the side wall of the clamping platform through the hinge seat, and the middle part of the driving handle is connected to the connecting rod through a hinge. The inner end of the connecting rod passes through the side wall of the clamping platform and is connected to the side wall of the supporting plate. When in use, the handle end of the holding driving handle is moved outward, thereby pulling the connecting rod, so that the supporting plate moves outward, and the movable clamping wheel is separated from the fixed clamping wheel.

[0019] Preferably, the fine-tuning propulsion part comprises a fine-tuning knob and a fine-tuning clamp, the fine-tuning knob is fixedly arranged on the upper end of the rotating shaft of one of the fixed clamping wheels, and the rotating shafts of the two fixed clamping wheels are respectively provided with a driven wheel and a driving wheel, the driven wheel and the driving wheel are connected by a belt transmission; and outer covers are arranged on the outer sides of the driven wheel and the driving wheel;

[0020] The fine-tuning card comprises a fine-tuning card seat, a pin and a second spring. The fine-tuning card seat is fixedly arranged at the upper end of the outer cover. A cylindrical groove is arranged inside the fine-tuning card seat. A second spring is arranged inside the cylindrical groove. The pin is arranged in the cylindrical groove, and its inner end is connected to the second spring. The outer side wall of the fine-tuning knob is provided with evenly distributed fine-tuning slots. Under the action of the second spring, the pin contacts the fine-tuning slot of the fine-tuning knob, thereby limiting the fine-tuning knob.

[0021] Preferably, the outer end of the bayonet is spherical, and the two sides of the fine-tuning slot are arc-shaped, so that when the fine-tuning knob is turned, the sliding between the bayonet and the fine-tuning knob is smoother.

[0022] Preferably, the clamping assembly comprises a clamping plate, a clamping pin, a bearing seat and a torsion spring, the inner side of one end of the clamping plate is fixedly connected to the clamping pin, and the slide seat is provided with a through groove at the clamping pin, the inner side of the middle part of the clamping plate is rotatably connected to the outer wall of the slide seat through the bearing seat, and the torsion spring is arranged on the rotating shaft of the bearing seat; the outer side surface of the guide rail is provided with a plurality of limiting holes, and the height of the limiting holes is consistent with the height of the clamping pin;

[0023] When the other end of the fixing plate is pressed, one end of the fixing pin will be lifted up and disengaged from the limiting hole, and the clamping platform can move quickly; when the pressure is released, the fixing plate, under the action of the torsion spring, the fixing pin passes through the through slot and is inserted into the limiting hole, and the clamping platform is fixed.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The present invention installs an oocyte collection needle on the upper end of a guide probe, guides the oocyte collection needle for puncture through the guide probe, and simultaneously provides a clamping and advancing mechanism for clamping the oocyte collection needle at the upper end of the guide probe, thereby achieving rapid advancement and fine-tuning of the oocyte collection needle, preventing the operator from using excessive force when using the oocyte collection needle to puncture the follicle and puncturing the follicle, thereby ensuring the safety of oocyte collection.

[0026] 2. The present invention places the collection test tube at a constant temperature by setting a constant temperature box to ensure the activity of the oocyte.

[0027] 3. The present invention releases the lock of the slide seat and the slide rail by pressing the clamping plate on the clamping assembly, so that the clamping platform can be quickly moved to achieve rapid puncture of the oocyte collection needle. When it reaches the vicinity of the follicle, the pressure can be released to fix the clamping platform and the slide rail.

[0028] 4. The present invention can slowly advance the oocyte collection needle through the fine-tuning clamp to slowly puncture the follicle, thereby ensuring that the follicle will not be punctured; during operation, the user rotates the fine-tuning knob, and the fine-tuning knob drives the driving wheel and the driven wheel to rotate, thereby driving the two fixed clamping wheels to rotate, so that the oocyte collection needle moves forward slowly, and at the same time, the pin in the fine-tuning clamp seat moves one by one in the fine-tuning slot of the fine-tuning knob to avoid excessive rotation speed.

[0029] 5. The present invention can conveniently separate or clamp the movable clamping wheel and the fixed clamping wheel through the driving mechanism, thereby completing the loosening or clamping of the oocyte collection needle; and the clamping of the oocyte collection needle by the movable clamping wheel and the fixed clamping wheel is more stable and the operation is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an oocyte collection device;

[0031] Figure 2 It is a structural schematic diagram of a guiding probe and a clamping and propulsion mechanism in an oocyte collection device;

[0032] Figure 3 It is a schematic diagram of the structure of a guiding probe in an oocyte collection device;

[0033] Figure 4 It is a schematic diagram of the structure of an oocyte collection needle in an oocyte collection device;

[0034] Figure 5 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0035] Figure 6 It is a structural schematic diagram of a clamping and propulsion mechanism in an oocyte collection device;

[0036] Figure 7 It is a schematic diagram of the structure of a clamping and propulsion mechanism in an oocyte collection device after the outer cover is removed;

[0037] Figure 8 A bottom view of a clamping and advancing mechanism in an oocyte collection device;

[0038] Fig. 9 It is a schematic diagram of the structure of a movable clamping component in an oocyte collection device;

[0039] Fig.10 A rear side view of a clamping and advancing mechanism in an oocyte collection device;

[0040] Fig.11 for Figure 6 A schematic diagram of the enlarged structure of B;

[0041] Fig.12 It is a schematic diagram of the structure of a fine-tuning card in an oocyte collection device;

[0042] Fig.13 It is a schematic diagram of the structure of a slide in an oocyte collection device;

[0043] Fig.14 The present invention is a schematic diagram of the structure of a fixing component in an oocyte collection device.

[0044] Numbers in the figure: 1. Guide probe; 2. Clamping and propulsion mechanism; 3. Connecting tube; 4. Negative pressure aspirator; 5. Collection container; 6. B-ultrasound machine; 7. Connecting wire; 8. Oocyte collection needle;

[0045] 101, oocyte collection needle insertion hole; 102, guide rail; 1021, limiting hole;

[0046] 201, clamping platform; 202, slide seat; 203, clamping assembly; 204, fixed clamping wheel; 205, movable clamping assembly; 206, driving assembly; 207, fine-tuning knob; 208, fine-tuning clamp; 209, outer cover; 2010, belt; 2011, driven wheel; 2012, driving wheel;

[0047] 501. Constant temperature box; 502. Collection test tube;

[0048] 2031, fixing plate; 2032, fixing latch; 2033, bearing seat; 2034, torsion spring;

[0049] 2051, a bearing plate; 2052, a connecting shaft; 2053, a movable clamping wheel; 2054, a sliding rod; 2055, a first spring;

[0050] 2061, driving handle; 2062, connecting rod; 2063, hinged seat;

[0051] 2071, fine-tuning slot; 2081, fine-tuning seat; 2082, latch; 2083, second spring. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] For example, see Figure 1-Figure 14 , an oocyte collection device, comprising

[0054] A guiding probe 1 is provided with an oocyte collection needle insertion hole 101 for inserting an oocyte collection needle 8, and a distal end of the guiding probe 1 is connected to a B-ultrasound machine 6 for guiding the oocyte collection needle 8 into the body of the collector and presenting an image on a display screen of the B-ultrasound machine 6;

[0055] The oocyte collection needle 8 has its end connected to the collection container 5 via the connecting tube 3. When in use, the oocyte collection needle 8 enters the vagina along with the guide probe 1, penetrates the vaginal wall to puncture the target follicle, and performs negative pressure suction of the follicular fluid. The oocyte is sucked into the collection container 5 together with the follicular fluid.

[0056] A negative pressure aspirator 4, which is connected to a collection container 5 via a connecting tube 3 and is used to provide negative pressure to the collection container 5 so that the oocyte collection needle 8 can aspirate follicular fluid;

[0057] The collecting container 5 includes a thermostat 501 and a collecting tube 502 disposed on the thermostat 501, and is used to store the aspirated oocytes in the collecting tube 502 and maintain the activity of the oocytes at a constant temperature;

[0058] The B-ultrasound machine 6 is connected to the guiding probe 1 via a connecting line 7 to provide image guidance for the collection of oocytes.

[0059] The upper end of the guide probe 1 is provided with a clamping and propelling mechanism 2, which includes a fast propelling part and a fine-tuning propelling part.

[0060] By installing the oocyte collection needle 8 on the upper end of the guide probe 1, the oocyte collection needle 8 is guided by the guide probe 1 for puncture, and at the same time, a clamping and pushing mechanism 2 for clamping the oocyte collection needle 8 is provided at the upper end of the guide probe 1, so that the oocyte collection needle 8 can be pushed quickly and pushed with fine adjustment, and the operator is prevented from using too much force when using the oocyte collection needle 8 to puncture the follicle, thereby ensuring the safety of oocyte collection.

[0061] For example 2, please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.13 , Fig.14 In order to realize convenient clamping and rapid advancement of the oocyte collection needle 8, this embodiment adds the following scheme on the basis of the first embodiment:

[0062] Among them, the rapid advancement part includes a clamping platform 201, and the lower parts of both sides of the clamping platform 201 are connected with slides 202 through connecting columns respectively. Two guide rails 102 are symmetrically arranged on both sides of the upper end of the guide probe 1 along its length direction, and the two slides 202 at the lower end of the clamping platform 201 are respectively slidably arranged on the two guide rails 102; the sides of the two slides 202 are provided with fixing components 203 for fixing the clamping platform 201 to the slide rails.

[0063] A set of fixed clamping wheels 204 and a set of movable clamping components 205 are provided at the lower end of the clamping platform 201. The fixed clamping wheels 204 are connected to one side of the clamping platform 201 through a rotating shaft. A rectangular through groove is provided on the side of the clamping platform 201 opposite to the fixed clamping wheels 204. The movable clamping components 205 are arranged in the rectangular through groove.

[0064] The movable clamping assembly 205 includes a bearing plate 2051, a connecting shaft 2052, a movable clamping wheel 2053, a slide bar 2054 and a first spring 2055. There are two slide bars 2054, which are transversely arranged in the rectangular through groove. The bearing plate 2051 is slidably arranged on the slide bars 2054. The outer side of the slide bars 2054 is sleeved with a first spring 2055, and the first spring 2055 is located between the bearing plate 2051 and the outer side wall of the rectangular through groove; the lower end of the bearing plate 2051 is connected to two movable clamping wheels 2053 through the connecting shaft 2052, and the two movable clamping wheels 2053 and the two fixed clamping wheels 204 have the same height and position;

[0065] When the oocyte collection needle 8 is inserted into the oocyte collection needle insertion hole 101, at this time, one side of the oocyte collection needle 8 is pressed against the arc groove wall of the fixed clamping wheel 204, and at the same time, under the action of the first spring 2055, the two movable clamping wheels 2053 are closely close to the two fixed clamping wheels 204, so that the oocyte collection needle 8 is fixedly clamped between the fixed clamping wheel 204 and the movable clamping wheel 2053.

[0066] A driving mechanism is provided on the side of the clamping platform 201 to make the movable clamping wheel 2053 leave the fixed clamping wheel 204. The driving mechanism includes a driving handle 2061, a connecting rod 2062 and a hinge seat 2063. One end of the driving handle 2061 is hinged to the side wall of the clamping platform 201 through the hinge seat 2063, and the middle part of the driving handle 2061 is connected to the connecting rod 2062 through a hinge. The inner end of the connecting rod 2062 passes through the side wall of the clamping platform 201 and is connected to the side wall of the supporting plate 2051. When in use, the handle end of the driving handle 2061 is moved outward, thereby pulling the connecting rod 2062, so that the supporting plate 2051 moves outward, and the movable clamping wheel 2053 is separated from the fixed clamping wheel 204.

[0067] The clamping assembly 203 includes a clamping plate 2031, a clamping pin 2032, a bearing seat 2033 and a torsion spring 2034. The inner side of one end of the clamping plate 2031 is fixedly connected to the clamping pin 2032, and the slide 202 is provided with a through groove at the clamping pin 2032. The inner side of the middle part of the clamping plate 2031 is rotatably connected to the outer wall of the slide 202 through the bearing seat 2033. The torsion spring 2034 is arranged on the rotating shaft of the bearing seat 2033. The outer side surface of the guide rail 102 is provided with a plurality of limiting holes 1021, and the height of the limiting holes 1021 is consistent with the height of the clamping pin 2032.

[0068] When the other end of the fixing plate 2031 is pressed, one end of the fixing pin 2032 will be lifted up and disengaged from the limiting hole 1021, and the clamping platform 201 can move quickly; when the pressure is released, the fixing plate 2031, under the action of the torsion spring 2034, the fixing pin 2032 passes through the through slot and is inserted into the limiting hole 1021, and the clamping platform 201 is fixed.

[0069] Example 3, please refer to Figure Figure 6 , Figure 7 , Figure 8 , Fig.10 , Fig.11 , Fig.12 In order to achieve fine-tuning and slow advancement of the oocyte collection needle 8, this embodiment adds the following scheme on the basis of the second embodiment:

[0070] The fine-tuning propulsion part includes a fine-tuning knob 207 and a fine-tuning clamp 208. The fine-tuning knob 207 is fixedly arranged at the upper end of the rotating shaft of one of the fixed clamping wheels 204. The rotating shafts of the two fixed clamping wheels 204 are respectively provided with a driven wheel 2011 and a driving wheel 2012. The driven wheel 2011 and the driving wheel 2012 are connected by a belt 2010. An outer cover 209 is arranged on the outer side of the driven wheel 2011 and the driving wheel 2012. The fine-tuning knob 207 is located outside the upper end of the outer cover 209.

[0071] The fine-tuning card 208 includes a fine-tuning card seat 2081, a pin 2082 and a second spring 2083. The fine-tuning card seat 2081 is fixedly set at the upper end of the outer cover 209. The interior of the fine-tuning card seat 2081 is provided with a cylindrical groove, and the interior of the cylindrical groove is provided with a second spring 2083. The pin 2082 is set in the cylindrical groove, and its inner end is connected with the second spring 2083; the outer side wall of the fine-tuning knob 207 is provided with evenly distributed fine-tuning slots 2071, and the pin 2082 is in conflict with the fine-tuning slot 2071 of the fine-tuning knob 207 under the action of the second spring 2083, thereby limiting the fine-tuning knob 207.

[0072] The outer end of the bayonet 2082 is spherical, and both sides of the fine-tuning slot 2071 are arc-shaped, so that when the fine-tuning knob 207 is rotated, the bayonet 2082 and the fine-tuning knob 207 slide more smoothly.

[0073] Working principle of the present invention:

[0074] Before collecting oocytes, select a puncture needle of appropriate specifications according to the specific conditions of the patient, and connect the connecting tube. Install the collection container 5 at the end of the connecting tube 3 to ensure good sealing. Insert the oocyte collection needle 8 into the oocyte collection needle insertion hole 101 of the guide probe 1, and fix the oocyte collection needle 8 by the clamping and pushing mechanism; turn on the negative pressure aspirator and adjust it to a suitable negative pressure value. The operator holds the handle of the guide probe 1 and slowly inserts the guide probe 1 and the oocyte collection needle 8 into the patient's body.

[0075] Then, the fast-advancing part is used to make the oocyte collection needle 8 penetrate the ovarian wall and enter the ovary. Specifically, when the user presses the ends of the clamping plates 2031 on the outer walls of the slide seat 202 on both sides with fingers, one end of the clamping pin 2032 of the clamping plate 2031 will be tilted, and the clamping pin 2032 will be separated from the limiting hole 1021, and the clamping platform 201 can move quickly; when the oocyte collection needle 8 reaches the vicinity of the follicle, the pressure is released, and the clamping plate 2031, under the action of the torsion spring 2034, makes the clamping pin 2032 pass through the through groove and insert into the limiting hole 1021, and the clamping platform 201 is fixed;

[0076] The oocyte collection needle 8 is then slowly inserted into the follicle by the fine-tuning propulsion part. Specifically, the user holds the fine-tuning knob 207, and the rotation of the fine-tuning knob 207 drives the driving wheel 2012 and the driven wheel 2011 to rotate, thereby driving the two fixed clamping wheels 204 to rotate, so that the clamped oocyte collection needle 8 moves slowly forward, and at the same time, the pin 2082 in the fine-tuning holder 2081 moves one by one in the fine-tuning slot 2071 of the fine-tuning knob 207 to avoid excessive rotation speed, thereby preventing the follicle from being pierced and ensuring the effectiveness of collection.

[0077] When the oocyte collection needle 8 penetrates the follicle, the follicular fluid inside the follicle is sucked by negative pressure, and the follicular fluid is sucked into the collection container 5. After the collection is completed, the negative pressure aspirator is turned off, and the guide probe 1 and the oocyte collection needle 8 are slowly pulled out of the patient's body. The collection container 5 is disassembled and the collected oocytes are subsequently processed.

[0078] The present invention installs an oocyte collection needle 8 on the upper end of a guide probe 1, guides the oocyte collection needle 8 to perform puncture through the guide probe 1, and simultaneously provides a clamping and advancing mechanism 2 for clamping the oocyte collection needle 8 at the upper end of the guide probe 1, thereby achieving rapid advancement and fine-tuning of the oocyte collection needle 8, thereby preventing the operator from using excessive force to puncture the follicle when using the oocyte collection needle 8, thereby ensuring the safety of oocyte collection. The collection test tube 502 is placed at a constant temperature by providing a constant temperature box 501 to ensure the activity of the oocyte.

[0079] By pressing the clamping plate 2031 on the clamping assembly 203, the slide 202 and the slide rail are unlocked, so that the clamping platform 201 can be quickly moved to achieve rapid puncture of the oocyte collection needle 8. When it reaches the vicinity of the follicle, the pressing can be released to fix the clamping platform 201 and the slide rail. The oocyte collection needle 8 can be slowly pushed forward by the fine-tuning clamp 208 to achieve slow puncture of the follicle, thereby ensuring that the follicle will not be punctured; during operation, the user rotates the fine-tuning knob 207, and the fine-tuning knob 207 drives the driving wheel 2012 and the driven wheel 2011 to rotate, thereby driving the two fixed clamping wheels 204 to rotate, so that the oocyte collection needle 8 moves forward slowly, and at the same time, the bayonet 2082 in the fine-tuning clamp seat 2081 moves one by one in the fine-tuning slot 2071 of the fine-tuning knob 207 to avoid excessive rotation speed.

[0080] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oocyte collection device, characterized in that: include: A guide probe (1), wherein the guide probe (1) is provided with an oocyte collection needle insertion hole (101) for inserting the oocyte collection needle (8), and the end of the guide probe (1) is connected to a B-ultrasound machine (6) for guiding the oocyte collection needle (8) into the body of the collector and presenting an image on a display screen of the B-ultrasound machine (6); An oocyte collection needle (8), the end of which is connected to a collection container (5) via a connecting tube (3). When in use, the oocyte collection needle (8) enters the vagina along with the guide probe (1), penetrates the vaginal wall to puncture the target follicle, and performs negative pressure suction of follicular fluid, whereby the oocyte is sucked into the collection container (5) along with the follicular fluid; A negative pressure aspirator (4), the negative pressure aspirator (4) being connected to a collection container (5) via a connecting tube (3) and being used to provide negative pressure to the collection container (5) so that an oocyte collection needle (8) can aspirate follicular fluid; A collection container (5), the collection container (5) comprising a constant temperature box (501) and a collection tube (502) arranged on the constant temperature box (501), for storing the aspirated oocytes in the collection tube (502) and maintaining the activity of the oocytes at a constant temperature; A B-ultrasound machine (6), the B-ultrasound machine (6) being connected to the guide probe (1) via a connecting line (7) to provide image guidance for the collection of oocytes; The upper end of the guide probe (1) is provided with a clamping and propulsion mechanism (2), and the clamping and propulsion mechanism (2) comprises a rapid propulsion part and a fine-tuning propulsion part; The fast advancing part comprises a clamping platform (201), the lower parts of both sides of the clamping platform (201) are respectively connected with slides (202) through connecting columns, the upper sides of the guide probe (1) are symmetrically provided with two guide rails (102) along the length direction thereof, and the two slides (202) at the lower end of the clamping platform (201) are respectively slidably arranged on the two guide rails (102); the sides of the two slides (202) are provided with fixing components (203) for fixing the clamping platform (201) and the guide rails (102); A group of fixed clamping wheels (204) and a group of movable clamping components (205) are provided at the lower end of the clamping platform (201); the fixed clamping wheels (204) are connected to one side of the clamping platform (201) via a rotating shaft; a rectangular through groove is provided on the side of the clamping platform (201) opposite to the fixed clamping wheels (204); and the movable clamping components (205) are arranged in the rectangular through groove; The movable clamping assembly (205) comprises a bearing plate (2051), a connecting shaft (2052), a movable clamping wheel (2053), a sliding rod (2054) and a first spring (2055). The sliding rods (2054) are two in number. The two sliding rods (2054) are transversely arranged in a rectangular through groove. The bearing plate (2051) is slidably arranged on the sliding rods (2054). The outer side of the sliding rods (2054) is sleeved with the first spring (2055). The first spring (2055) is located between the supporting plate (2051) and the outer side wall of the rectangular through groove; the lower end of the supporting plate (2051) is connected to two movable clamping wheels (2053) via a connecting shaft (2052), and the two movable clamping wheels (2053) and the two fixed clamping wheels (204) are of the same height and position; under the action of the first spring (2055), the two movable clamping wheels (2053) are closely close to the two fixed clamping wheels (204), thereby fixing and clamping the oocyte collection needle (8); A driving mechanism for moving the movable clamping wheel (2053) away from the fixed clamping wheel (204) is provided on the side of the clamping platform (201), the driving mechanism comprising a driving handle (2061), a connecting rod (2062) and a hinge seat (2063), one end of the driving handle (2061) is hinged to the side wall of the clamping platform (201) through the hinge seat (2063), the middle part of the driving handle (2061) is connected to the connecting rod (2062) through a hinge, and the inner end of the connecting rod (2062) passes through the side wall of the clamping platform (201) and is connected to the side wall of the bearing plate (2051); The fine-tuning propulsion part comprises a fine-tuning knob (207) and a fine-tuning clamp (208); the fine-tuning knob (207) is fixedly arranged on the upper end of the rotating shaft of one of the fixed clamping wheels (204); and the rotating shafts of the two fixed clamping wheels (204) are respectively provided with a driven wheel (2011) and a driving wheel (2012); the driven wheel (2011) and the driving wheel (2012) are connected to each other by a belt (2010); and an outer cover (209) is arranged on the outer side of the driven wheel (2011) and the driving wheel (2012), and the fine-tuning knob (207) is located outside the upper end of the outer cover (209); The fine-tuning clamp (208) comprises a fine-tuning clamp seat (2081), a clamping pin (2082) and a second spring (2083); the fine-tuning clamp seat (2081) is fixedly arranged at the upper end of the outer cover (209); a cylindrical groove is arranged inside the fine-tuning clamp seat (2081); a second spring (2083) is arranged inside the cylindrical groove; the clamping pin (2082) is arranged in the cylindrical groove, and its inner end is connected to the second spring (2083); the outer side wall of the fine-tuning knob (207) is provided with uniformly distributed fine-tuning clamping slots (2071); the clamping pin (2082) contacts the fine-tuning clamping slot (2071) of the fine-tuning knob (207) under the action of the second spring (2083), thereby limiting the fine-tuning knob (207).

2. An oocyte collection device according to claim 1, characterized in that: The outer end of the latch (2082) is spherical, and the two sides of the fine-tuning slot (2071) are arc-shaped, so that when the fine-tuning knob (207) is turned, the latch (2082) and the fine-tuning knob (207) slide more smoothly.

3. An oocyte collection device according to claim 1, characterized in that: The fixing assembly (203) comprises a fixing plate (2031), a fixing pin (2032), a bearing seat (2033) and a torsion spring (2034); the inner side of one end of the fixing plate (2031) is fixedly connected to the fixing pin (2032); the slide seat (202) is provided with a through groove located at the fixing pin (2032); the inner side of the middle part of the fixing plate (2031) is rotatably connected to the outer wall of the slide seat (202) through the bearing seat (2033); the torsion spring (2034) is arranged on the rotating shaft of the bearing seat (2033); the outer side surface of the guide rail (102) is provided with a plurality of limiting holes (1021); the height of the limiting holes (1021) is consistent with the height of the fixing pin (2032); When the other end of the clamping plate (2031) is pressed, one end of the clamping pin (2032) will tilt up and disengage from the limiting hole (1021), so that the clamping platform (201) can move quickly; when the pressure is released, the clamping plate (2031) is acted upon by the torsion spring (2034), so that the clamping pin (2032) passes through the through slot and is inserted into the limiting hole (1021), and the clamping platform (201) is fixed.

Images