TWI589289B - Blood collection device - Google Patents

Description

Blood collection device

The invention relates to a blood collection device, in particular to a blood collection device which provides a function of collecting blood, centrifuging blood and injecting.

In addition to plasma, blood also includes red blood cells and white blood cells and platelets. Red blood cells mainly transport oxygen. White blood cells are resistant to foreign bacteria, and platelets shoulder the function of blood coagulation. In addition to promoting blood clotting, platelets function far more than that. After the human body is injured, in addition to the formation of blood clots, the platelets will rupture and slowly release the growth factors therein after being squeezed in the injured site, thereby performing tissue repair. PRP (Platelet Rich Plasma) high-concentration platelet plasma technology in addition to orthopedic treatment, wound treatment has also been used in the care of chronic wounds such as diabetic foot, hemorrhoids, ophthalmology will also use this autologous plasma treatment of corneal ulcers or Dry eye syndrome.

Since the platelets produced from the bone marrow are rich in a large number of active growth factors, they can promote vascular proliferation and tissue regeneration and repair, and are the most easily grown growth factors in the human body. However, because the concentration of platelets is not mixed enough, red blood cells and white blood cells may have adverse effects on tissue repair, so the process of purifying platelets is required. PRP (Platelet Rich Plasma) high concentration Platelet plasma is blood drawn from the body. After being processed by a separation and purification instrument, the concentrated platelets are re-injected into the body to promote the repair of human tissue.

In operation, firstly, the syringe is used to extract the blood from the body, and then injected into the test tube to seal the test tube with a rubber sleeve. After processing by the purification instrument, the bottom of the test tube will have a layer of deep red plasma located on the plasma. It is a layer of high-concentration platelets (Platelet Rich Plasma (PRP)). The serum above the high-concentration platelets is serum, and the medical staff must use another syringe to fit an injection needle through the rubber sleeve of the test tube. Serum to absorb high-concentration platelets (Platelet Rich Plasma), because the amount of serum in the test tube is too high, the amount of platelets is too high, so the operation often draws serum, especially the length of the injection needle is not long enough, it is easy to be mixed with serum components. The purity of the platelets is reduced, which has an adverse effect on the repair of the tissue.

In particular, the blood drawn from the body is the first to use a set of syringes and injection needles, and then the blood in the syringe is sealed into a test tube for placement in a purification apparatus for centrifugation, so that the test tube exhibits a bottom layer. Plasma, a small amount of platelet high-concentration platelets (Platelet Rich Plasma) and the upper layer of serum, after which another set of syringes and injection needles are used, and the needle is inserted into the tube to aspirate the high-concentration platelets in the middle layer (Platelet) Rich Plasma) is re-injected into the affected part of the patient. Since the syringe, the injection needle and the test tube used for blood collection are all disposable medical consumables, they must be environmentally treated so as not to cause pollution problems, and the blood is collected by conventional blood and blood. Centrifugal purification using test tubes and high extraction Platelet Rich Plasma is injected into the affected part. Two syringes, injection needles and tubes are used for separation and purification before and after. The procedure is quite complicated and wastes medical equipment.

Thus, there is a vacuum lancet as shown in FIG. 1 and FIG. 2, which generally comprises a hollow syringe 1, a blood drawing needle (or injection needle) 2 and a vacuum test tube 3, and the syringe 1 One end of the blood collection needle 2 is disposed, and one end of the blood collection needle 2 is exposed to the outside and protrudes into the barrel 1. The vacuum tube 3 is disposed with a plug body 4 facing the barrel 1 to the vacuum tube 3. When the vacuum tube 3 is fitted into the barrel 1, the other end of the needle 1 is inserted into the syringe 1 and is placed in the vacuum tube 3 through the body 4. When the blood is collected, the blood collection needle 2 is inserted into the blood vessel and the vacuum tube 3 is pulled, and the blood is guided into the vacuum tube 3 through the blood collection needle 1 and sealed by the plug body 4, and the vacuum tube 3 is sealed. And pumping out the syringe 1 and putting it into a purification instrument to centrifuge out plasma, high-concentration platelets (Platelet Rich Plasma) and serum, but still borrow another syringe 1 and another new needle to suction the vacuum tube. The platelets in 3 are injected into the syringe 1 and injected into the affected part. Therefore, a set of syringes 1, a blood collection needle 2, and a vacuum test tube 3 are required to perform blood collection and centrifugation to purify the platelets, and then a set of syringes and injection needles are used to absorb the platelets in the vacuum tube 3 and then inject into the affected part. It is still very complicated and uses a variety of consumable equipment, which is both wasteful and environmentally friendly.

Accordingly, the main object of the present invention is to solve the problem of using a lot of consumable medical equipment in the conventional blood collection process, resulting in waste and environmental problems and procedures. It takes time and effort to provide a blood collection device that combines blood collection, test tubes, and injection of the same container.

In order to achieve the above object, the present invention provides a blood collection device comprising: a hollow tubular body, a cap and a drawbar, and one end of the tubular body is provided with a collecting portion smaller than the diameter of the tubular body, and the collecting portion is Reducing the bundle to form a tapered sleeve portion, the sleeve portion is provided with an outlet communicating with the interior of the tube body, and the inner wall of the tube body away from the sleeve portion is annularly divided into a plurality and the length direction of the tube body a rib in the same direction, the piston body is provided with a piston body that moves along the inner wall of the tube, and the piston body is provided with a screw hole and a plurality of concave portions matching the ribs away from the collecting portion, and the cap is provided a blind hole is assembled with the collecting portion, and the cap seals the outlet of the socket portion, and one end of the drawing rod is provided with a screw portion screwed to the screw hole.

Wherein, the inner wall of the tubular body is provided with a second retaining ring protruding from the inner wall of the tubular body, and the piston system forcibly passes through the retaining ring, and the retaining ring stops the piston body located in the tubular body along with the drawing rod Pulling away from the tube.

Wherein, the bottom of the blind hole of the cap is provided with a protrusion, and the protrusion protrudes into the outlet of the socket to seal the outlet.

Wherein, the piston body is made of an elastic plastic material, and the pipe body is screwed with a ring away from the sleeve portion, and the collar has an outer wall away from the socket portion, and the center of the outer wall is provided for A consistent hole through which the drawbar extends, the outer wall stopping the piston body from disengaging the tubular body.

Wherein the other end of the drawbar is larger than the outer diameter of the drawbar A grip for the hand to hold.

Therefore, when the blood is collected, the sleeve portion of the blood suction needle is firstly engaged with the sleeve portion of the tube body, and the pull rod is screwed to the screw hole of the piston body by the screw portion, and the grip is pressed. The piston body moves toward the blood drawing needle to extrude the air in the tube body, and then inserts the blood vessel into the blood vessel with the tip of the blood drawing needle, pulls the drawing rod to make blood enter the tube body to a predetermined amount, and then extracts the blood drawing. a needle, then the cap is sleeved on the collecting portion of the tube body, the convex plunger at the bottom of the blind hole of the cap enters the outlet of the socket portion, the outlet is blocked, and the drawing rod is rotated to make the screw portion Unscrew the screw hole, use only the piston body to seal the blood in the tube body, and then move the tube body into the centrifugal purifier, so that one end of the cap is below, the water slurry in the blood, the purified platelets (Platelet Rich Plasma) and serum are separated, the amount of plasma will be greater than the amount of Platelet Rich Plasma, and located in the collection part of the bottom of the tube and above, the purified platelets (Platelet Rich Plasma) will accumulate in Above the plasma, serum is in purified platelets (Platelet Ric Above the plasma.

In other words, the purified platelet (Platelet Rich Plasma) is located between the plasma and the serum in a smaller amount than the plasma and the serum, and then the push rod is pushed to discharge the plasma, and the new blood-sucking needle is used for the sleeve. Provided in the sleeve portion of the pipe body, the screw portion of the drawbar is screwed with the screw hole of the piston body, and the drawbar is coupled with the piston body, and the grip of the drawbar is pushed to push the piston body out Purified platelets (Platelet Rich Plasma) in the collection section, inserted into the affected part by the blood-sucking needle to make purified platelets in the collection part (Platelet Rich Plasma) is injected into the affected area.

In this way, the tube can be a syringe for taking blood and injecting platelets and can be used as a tube for separating plasma, platelets and serum, allowing blood to be drawn, separating plasma, platelets, serum and aspirating high concentration platelets (Platelet Rich) Plasma) The same container is used for injection in the affected area, so as to simplify the procedure and shorten the time and save medical equipment.

(previous part)

1‧‧‧Syringe

2‧‧‧ blood needle

3‧‧‧Vacuum test tube

4‧‧‧ body

(part of the invention)

A‧‧‧plasma

B‧‧‧purified platelets

C‧‧‧ serum

10a, 10b‧‧‧ body

11a, 11b‧‧‧ Collection Department

12a, 12b‧‧‧ ribs

13a, 13b‧‧‧ Sockets

14a‧‧ ‧ retaining ring

15a, 15b‧‧ Export

16a, 16b‧‧‧ drawbars

161a, 161b‧‧‧ screw holes

162a, 162b‧‧‧ grip

163a, 163b‧‧‧ piston body

164a, 164b‧‧‧ recess

165a, 165b‧‧‧ screw section

20‧‧‧ blood needle

21‧‧‧ Sets

30a, 30b‧‧‧ caps

31a, 31b‧‧‧ blind holes

32a, 32b‧‧‧ stud

17b‧‧‧ collar

171b‧‧‧ outer wall

172b‧‧‧through hole

Figure 1 is a combined perspective view of a conventional vacuum blood collection device.

2 is an exploded perspective view of a conventional vacuum blood collection device.

Figure 3 is an exploded perspective view of the first embodiment of the present invention.

Fig. 4 is a schematic view showing blood collection according to a first embodiment of the present invention.

Fig. 5 is a schematic view showing the pre-purification of the tube body with blood according to the first embodiment of the present invention.

Figure 6 is a cross-sectional view showing the combination of centrifuged plasma, purified platelets and serum according to the first embodiment of the present invention.

Figure 7 is an exploded perspective view showing the cap of the second embodiment of the present invention.

Figure 8 is a perspective view showing the assembly of a cap according to a second embodiment of the present invention.

Fig. 9A is a schematic view showing the use of blood collection according to a second embodiment of the present invention.

Figure 9B is a cross-sectional view showing the assembly of the tube body with blood according to a second embodiment of the present invention.

9C is a view showing a second embodiment of the present invention showing the centrifuged plasma, purified platelets, and Schematic diagram of serum.

Fig. 9D is a schematic view showing the discharge of plasma according to the second embodiment of the present invention.

Figure 9E is a schematic illustration of injection of purified platelets in accordance with a second embodiment of the present invention.

The detailed description of the present invention and the technical description of the present invention are further illustrated by the embodiments, but it should be understood that these embodiments are for illustrative purposes only and are not to be construed as limiting.

Referring to FIG. 3 and FIG. 4, a first embodiment of the blood collection device of the present invention comprises: a hollow transparent tube body 10a, a cap 30a and a drawing rod 16a, and one end of the tube body 10a is provided with less than the tube. a collecting portion 11a of the pipe diameter of the body 10a, the collecting portion 11a is further constricted to form a tapered connecting portion 13a, and the inner wall of the pipe body 10a away from the sleeve portion 13a is annularly divided into a plurality of tubes The rib 12a of the body 10a having the same direction in the longitudinal direction has two retaining rings 14a annularly protruding from the inner wall of the pipe body 10a, and an end surface of the socket portion 13a is provided with an outlet 15a communicating with the inside of the pipe body 10a. The inside of the tube body 10a is provided with a piston body 163a that cooperates with the inner wall of the tube body 10a. The piston body 163a is provided with an elastic plastic material. The piston body 163a is provided with a screw hole 161a away from the sleeve portion 13a. And the outer circumference of the piston body 163a is annularly arranged with a plurality of recesses 164a that cooperate with the ribs 12a.

The cap 30a is provided with a blind hole 31a formed in the collecting portion 11a. The bottom of the blind hole 31a is provided with a protruding post 32a. The protruding post 32a fits into the outlet 15a of the socket portion 13a. The outlet 15a plugs the seal.

One end of the drawing rod 16a is provided with a screw that is screwed into the screw hole 161a. The screw portion 165a has a grip 162a larger than the outer diameter of the drawbar 16a at the other end of the drawbar 16a to provide a grip for pushing and pulling.

With the above structure, please refer to FIG. 4 again. When the blood is collected, a blood drawing needle 20 is first used, and the sleeve portion 21 is fitted with the socket portion 13a of the tube body 10a. The piston body 163a is first with the drawing rod 16a. After the screwing, the pulling rod 16a is forcibly pushed to pass the piston body 163a through the retaining ring 14a of the inner wall of the tubular body 10a, and the retaining ring 14a can prevent the pulling rod 16a from being pulled. When the biasing force is too large, the piston body 163a is caused. Pulling out the tube 10a, the grip 162a is pushed to move the piston body 163a toward the blood drawing needle 20 to extrude the air in the tube body 10a, and the tip of the blood drawing needle 20 is inserted into the blood vessel. Pulling the pull rod 16a to allow blood to enter the tube body 10a to a predetermined amount, and then withdrawing the blood drawing needle 20, and the cap 30a is sleeved on the collecting portion 11a of the tube body 10a, as shown in FIG. The boss 32a at the bottom of the blind hole 31a of the cover 30a is inserted into the outlet 15a of the socket portion 13a, the outlet 15a is blocked, and the drawing rod 16a is extracted to make the outer peripheral recess 164a of the piston body 163a and the tube The rib 12a of the body 10a is engaged to rotate the pulling rod 16a to rotate the screw portion 165a away from the screw hole 161a, so as to prevent the piston body 163a from following the drawing The rods 16a rotate together.

Next, the tube body 10a is moved into a centrifugal purifier, and one end of the cap 30a is placed below, and plasma a, purified platelet (Platelet Rich Plasma) b and serum c in the blood are separated, and the plasma a portion is located at The tube body 10a is collected on the portion 11a and above, and the minimum amount of purified platelets (Platelet Rich Plasma) b is collected on the plasma a, and the serum c is collected above the platelet Rich Plasma b. Show. Injection purification When the platelet (Platelet Rich Plasma) b is in the affected part, the concave portion 164a on the outer circumference of the piston body 163a is first engaged with the rib 12a of the tube body 10a, and the drawing rod 16a is rotated to screw the screw portion 165a to the piston body. The screw hole 161a of the 163a, and then the grip 162a is pushed to move the piston rod 165a toward the sleeve portion 13a to first squeeze the plasma, and then the new blood-sucking needle 20 is set. The portion 21 is sleeved on the socket portion 13a of the tube body 10a, and the blood drawing needle 20 is inserted into the affected portion, and the grip 162a of the drawing rod 16a is pushed to concentrate the purified platelets (Platelet Rich Plasma) collected in the collecting portion 11a. b is injected into the affected area.

Referring to FIG. 7, FIG. 8 and FIG. 9A, a second embodiment of the blood collection device of the present invention comprises: a hollow transparent tube body 10b, a cap 30b and a drawing rod 16b. One end of the tube body 10b is provided. a collecting portion 11b smaller than the diameter of the pipe body 10b, the collecting portion 11b is further constricted to form a tapered connecting portion 13b, and an end surface of the socket portion 13b is provided to communicate with the inside of the pipe body 10b. An outlet 15b, the inner wall of the tubular body 10b away from the sleeve portion 13b is annularly provided with a plurality of ribs 12b in the same direction as the longitudinal direction of the tubular body 10b, and the inner wall of the tubular body 10b is provided with the inner wall of the tubular body 10b. The piston body 163b is made of an elastic plastic material, and the piston body 163b is provided with a screw hole 161b away from the sleeve portion 13b. The outer circumference of the piston body 163b is annularly distributed. a plurality of recesses 164b of the tubular body 10b ribs 12b, the other end of the tubular body 10b away from the sleeve portion 13b is provided with a ring 17b, and the collar 17b is provided with an outer wall 171b away from the sleeve portion 13b. The center of the outer wall 171b is provided with a uniform hole 172b.

The cap 30b is provided with a blind hole assembled with the collecting portion 11b. 31b, a bottom of the blind hole 31b is provided with a stud 32b which fits into the outlet 15b of the socket portion 13b, and the outlet 15b is plugged and sealed.

One end of the drawing rod 16b is provided with a screw portion 165b screwed to the screw hole 161b, and the other end of the drawing rod 16b is provided with a grip 162b larger than the outer diameter of the drawing rod 16b for holding and pushing Pulling action, the drawbar 16b extends through the through hole 172b of the collar 17b.

Therefore, please refer to FIG. 7 and FIG. 9A to FIG. 9E together. When the blood is collected, the piston body 163b is first screwed with the drawing rod 16b. When the operation is performed, the collar 17b is first turned to make the piston body 163b fit. The tubular body 10b is fitted into the rib 12b of the inner wall of the tubular body 10b by a concave portion 164b on the outer circumference of the piston body 163b. The drawing rod 16b extends through the collar 17b to screw the screw portion 165b and the piston body 163b. 161b screwed. And using a blood-sucking needle 20, the sleeve portion 21 is fitted with the sleeve portion 13b of the tube body 10b, and the grip 162b is pushed to move the piston body 15b toward the blood-collecting needle 20 to extrude the tube. The air in the body 10b is inserted into the blood vessel by the tip of the blood-sucking needle 20, and the drawing rod 16b is pulled to bring the blood into the tube body 10b to a predetermined amount, and blood collection is performed as shown in Fig. 9A, and the blood-sucking needle 20 is extracted. Then, the cap 30b is sleeved on the collecting portion 11b of the tube body 10b, and the boss 32b at the bottom of the blind hole 31b of the cap 30b is inserted into the outlet 14b of the socket portion 13b, and the outlet 14b is blocked. Then, the concave portion 164b on the outer circumference of the piston body 163b is fitted into the rib 12b of the inner wall of the tubular body 10b, and the drawing rod 16b is rotated to rotate the screw portion 161b away from the screw hole 151b as shown in Fig. 9B, and the tube is again The body 10b is moved into the centrifugal purifier, and one end of the cap 30b is placed below, and plasma a, purified platelets in the blood (Platelet Rich Plasma) b and serum c are separated, the plasma a portion will be located in the collection portion 11b of the tube body 10b and above, the smallest amount of purified platelets (Platelet Rich Plasma) b will accumulate on the plasma a, and the serum c will be aggregated in the purification. Above the platelet (Platelet Rich Plasma) b is shown in Figure 9C.

In other words, Platelet Rich Plasma b is located between plasma a and serum c, and the amount of purified platelet (Platelet Rich Plasma) b is less than that of plasma a and serum c. Therefore, the platelet-rich platelet (Platelet Rich Plasma) b is applied to the affected part. First, the drawing rod 16b is screwed to the screw hole 1651b of the piston body 163b with the screw portion 165b, and the drawing rod 16b is connected with the piston body 163b, and then pushed. The grip 162b causes the pull rod 16b to move the piston body 163b toward the sleeve portion 13b to first squeeze the plasma a out as shown in Fig. 9D, and then the new one of the blood sucking needles 20 is sleeved on the sleeve portion 21. The socket portion 13b of the tube body 10b is inserted into the affected part, and the grip 162b of the drawing rod 16b is pushed to inject the purified platelet (Platelet Rich Plasma) b collected in the collecting portion 11b into the affected part. Figure 9E.

In this way, the tube body 10b can be used for a container for storing blood during blood collection. After the blood is sucked into the tube body 10b for a predetermined amount, the drawing rod 16b can be rotated to be disengaged from the piston body 163b, and the blood drawing needle 20 is pulled out. After the sleeve portion 13b of the tube body 10b, the collecting portion 11b is sleeved by the cap 30b, and the boss 32b of the cap 30b is inserted into the outlet 14b of the sleeve portion 13b to seal the blood. In the tube body 10b, the tube body 10b can be used in a test tube and loaded into a centrifugal purifier to centrifuge the platelet (Platelet Rich Plasma) b, so that the tube body 10b can be used as a container for blood extraction and a test tube for containing blood into the centrifugal purifier, thus eliminating the need to use a syringe to collect blood and then inject the test tube, and save medical consumables.

Next, after the blood is separated from the plasma a, the purified platelet (Platelet Rich Plasma) b, and the serum c by a centrifugal purifier, the plasma at the bottom of the tube 10b must be discharged to make a smaller amount of purified platelets ( The platelet Rich Plasma) b is collected at the position of the collecting portion 11b. Therefore, the screw portion 165b of the drawing rod 16b is firstly locked with the screw hole 161b of the piston body 163b, and the grip 162b is pushed to drive the drawing rod 16b. The piston body 163b is pressed in the direction of the blood-sucking needle 20, and the plasma filled in the collecting portion 11b is drained, so that the platelet Rich Plasma b can be collected in the internal space of the collecting portion 11b, and then the blood is drawn. The sleeve portion 21 of the needle 20 is fitted into the socket portion 13b of the tube body 10b, and the blood collection needle 20 is inserted into the grip portion 162b of the affected portion to push the drawer rod 16b, and the platelet (Platelet Rich Plasma) b is injected into the affected part. . In this process, it is no longer necessary to use another set of syringes and blood-sucking needles to pump out the platelet (Platelet Rich Plasma) b in the tube body 10b and then inject the affected part, so that the tube body 10b can extract and inject purified platelets (Platelet Rich Plasma) The container of b is used to collect blood, separate the platelet (Platelet Rich Plasma) b and the platelet purified plasma (Platelet Rich Plasma) b into the affected part, all of which can save medical equipment and simplify the procedure.

It is worth mentioning that the plasma a has been discharged before the injection of high-concentration platelets (Platelet Rich Plasma) b in the present invention, and a small amount The Platelet Rich Plasma b can be collected at the location of the collection portion 11b, so that the injector can visually control the amount of the Platelet Rich Plasma b injection into the affected part, thereby avoiding the re-injection of the affected part of the serum.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are all It is still within the scope of the invention patent.

10a‧‧‧pipe body

11a‧‧‧ Collection Department

12a‧‧‧ Ribs

13a‧‧‧ Sockets

14a‧‧ ‧ retaining ring

15a‧‧‧Export

16a‧‧‧Tie rod

161a‧‧‧ screw hole

162a‧‧‧ grip

163a‧‧‧ piston body

164a‧‧‧ recess

165a‧‧‧ screw department

30a‧‧‧Cap

Claims (4)

A blood collection device comprising: a hollow tubular body, one end of the tubular body is provided with a collecting portion smaller than the diameter of the tubular body, and the collecting portion is constricted to form a tapered sleeve portion, the socket The portion is provided with an outlet communicating with the inside of the tube body, and the inner wall of the tube body away from the sleeve portion is annularly disposed with a plurality of ribs in the same direction as the longitudinal direction of the tube body, and the tube body is disposed inside the tube body The wall cooperates with a moving piston body, the piston body is provided with a screw hole and a plurality of concave portions engaged with the ribs away from the collecting portion, and one end of a drawing rod is provided with a screw portion screwed to the screw hole, the tube The inner wall of the body is provided with a second retaining ring protruding from the inner wall of the tube, and the piston system forcibly passes through the retaining ring, and the retaining ring stops the piston body located in the tubular body from being pulled with the drawing rod Disengaging the tubular body; and a cap provided with a blind hole associated with the collecting portion, by which the outlet of the socket is sealed. The blood collection device of claim 1, wherein the bottom of the blind hole of the cap is provided with a protrusion, and the protrusion extends into the outlet of the socket to seal the outlet. The blood collection device of claim 1, wherein the piston body is made of an elastic plastic material, and the tube body is provided with a ring away from the sleeve portion, and the collar is away from the socket portion. The direction has an outer wall, the center of which is provided with a constant hole through which the drawbar extends, and the outer wall prevents the piston body from coming off the tubular body. The blood collection device according to claim 1, wherein the other end of the drawing rod is provided with a grip larger than the outer diameter of the drawing rod for holding by the hand.